| 18/10/2017 | One More Time (CD) | |
|
1. | One More Time |
| 2. | LUV ME | |
| 3. | One More Time (Instrumental) | |
| 4. | LUV ME (Instrumental) | |
| 18/10/2017 | One More Time (CD+DVD A) | |
|
1. | One More Time |
| 2. | LUV ME | |
| 3. | One More Time (Instrumental) | |
| 4. | LUV ME (Instrumental) | |
| DVD: | ||
| 1. | One More Time (PV) | |
| 2. | One More Time (Making of) | |
| 18/10/2017 | One More Time (CD+DVD B) | |
|
1. | One More Time |
| 2. | LUV ME | |
| 3. | One More Time (Instrumental) | |
| 4. | LUV ME (Instrumental) | |
| DVD: | ||
| 1. | One More Time (PV Dance ver.) | |
| 2. | Jacket Shooting Making Movie | |
| 18/10/2017 | One More Time (CD ONCE JAPAN Limited Edition) | |
|
1. | One More Time |
| 2. | LUV ME | |
| 3. | One More Time (Instrumental) | |
| 4. | LUV ME (Instrumental) | |
| 07/02/2018 | Candy Pop (CD) | |
|
1. | Candy Pop |
| 2. | BRAND NEW GIRL | |
| 3. | Candy Pop (Instrumental) | |
| 4. | BRAND NEW GIRL (Instrumental) | |
| 07/02/2018 | Candy Pop (CD+DVD A) | |
|
1. | Candy Pop |
| 2. | BRAND NEW GIRL | |
| 3. | Candy Pop (Instrumental) | |
| 4. | BRAND NEW GIRL (Instrumental) | |
| DVD: | ||
| 1. | Candy Pop (PV) | |
| 2. | Candy Pop (Making of) | |
| 07/02/2018 | Candy Pop (CD+DVD B) | |
|
1. | Candy Pop |
| 2. | BRAND NEW GIRL | |
| 3. | Candy Pop (Instrumental) | |
| 4. | BRAND NEW GIRL (Instrumental) | |
| DVD: | ||
| 1. | Candy Pop (PV Dance ver.) | |
| 2. | Jacket Shooting Making Movie | |
| 07/02/2018 | Candy Pop (CD ONCE JAPAN Limited Edition) | |
|
1. | Candy Pop |
| 2. | BRAND NEW GIRL | |
| 3. | Candy Pop (Instrumental) | |
| 4. | BRAND NEW GIRL (Instrumental) | |
| 16/05/2018 | Wake Me Up (CD) | |
|
1. | Wake Me Up |
| 2. | Pink Lemonade | |
| 3. | Wake Me Up (Instrumental) | |
| 4. | Pink Lemonade (Instrumental) | |
| 16/05/2018 | Wake Me Up (CD+DVD A) | |
|
1. | Wake Me Up |
| 2. | Pink Lemonade | |
| 3. | Wake Me Up (Instrumental) | |
| 4. | Pink Lemonade (Instrumental) | |
| DVD: | ||
| 1. | Wake Me Up (PV) | |
| 2. | Wake Me Up (Making of) | |
| 16/05/2018 | Wake Me Up (CD+DVD B) | |
|
1. | Wake Me Up |
| 2. | Pink Lemonade | |
| 3. | Wake Me Up (Instrumental) | |
| 4. | Pink Lemonade (Instrumental) | |
| DVD: | ||
| 1. | BRAND NEW GIRL (PV) | |
| 2. | BRAND NEW GIRL (Making of) | |
| 3. | Jacket Shooting Making Movie | |
| 16/05/2018 | Wake Me Up (CD ONCE JAPAN Limited Edition) | |
|
1. | Wake Me Up |
| 2. | Pink Lemonade | |
| 3. | Wake Me Up (Instrumental) | |
| 4. | Pink Lemonade (Instrumental) | |
| 15/06/2018 | I WANT YOU BACK (Digital) | |
|
1. | I WANT YOU BACK |
| 17/08/2018 | BDZ (Digital) | |
|
1. | BDZ |
| 22/10/2018 | STAY BY MY SIDE (Digital) | |
|
1. | STAY BY MY SIDE |
| 17/07/2019 | HAPPY HAPPY (CD) | |
|
1. | HAPPY HAPPY |
| 2. | The Best Thing I Ever Did -Japanese ver.- | |
| 3. | HAPPY HAPPY (collapsedone Remix) | |
| 4. | HAPPY HAPPY (Instrumental) | |
| 17/07/2019 | HAPPY HAPPY (CD+DVD A) | |
|
1. | HAPPY HAPPY |
| 2. | The Best Thing I Ever Did -Japanese ver.- | |
| 3. | HAPPY HAPPY (collapsedone Remix) | |
| 4. | HAPPY HAPPY (Instrumental) | |
| DVD: | ||
| 1. | HAPPY HAPPY (MV) | |
| 2. | HAPPY HAPPY (Making of) | |
| 17/07/2019 | HAPPY HAPPY (CD+DVD B) | |
|
1. | HAPPY HAPPY |
| 2. | The Best Thing I Ever Did -Japanese ver.- | |
| 3. | HAPPY HAPPY (collapsedone Remix) | |
| 4. | HAPPY HAPPY (Instrumental) | |
| DVD: | ||
| 1. | HAPPY HAPPY (MV Lip Sync ver.) | |
| 2. | Jacket Shooting Making Movie | |
| 17/07/2019 | HAPPY HAPPY (CD FC Edition) | |
|
1. | HAPPY HAPPY |
| 2. | The Best Thing I Ever Did -Japanese ver.- | |
| 3. | HAPPY HAPPY (collapsedone Remix) | |
| 4. | HAPPY HAPPY (Instrumental) | |
| 17/07/2019 | HAPPY HAPPY (3CD+2DVD Warner Limited Edition BOX) | |
|
CD 1: | |
| 1. | HAPPY HAPPY | |
| 2. | The Best Thing I Ever Did -Japanese ver.- | |
| 3. | HAPPY HAPPY (collapsedone Remix) | |
| 4. | HAPPY HAPPY (Instrumental) | |
| CD 2: | ||
| 1. | HAPPY HAPPY | |
| 2. | The Best Thing I Ever Did -Japanese ver.- | |
| 3. | HAPPY HAPPY (collapsedone Remix) | |
| 4. | HAPPY HAPPY (Instrumental) | |
| CD 3: | ||
| 1. | HAPPY HAPPY | |
| 2. | The Best Thing I Ever Did -Japanese ver.- | |
| 3. | HAPPY HAPPY (collapsedone Remix) | |
| 4. | HAPPY HAPPY (Instrumental) | |
| DVD 1: | ||
| 1. | HAPPY HAPPY (MV) | |
| 2. | HAPPY HAPPY (Making of) | |
| DVD 2: | ||
| 1. | HAPPY HAPPY (MV Lip Sync ver.) | |
| 2. | Jacket Shooting Making Movie | |
| 24/07/2019 | Breakthrough (CD) | |
|
1. | Breakthrough |
| 2. | FANCY -Japanese ver.- | |
| 3. | Breakthrough (taalthechoi Remix) | |
| 4. | Breakthrough (Instrumental) | |
| 24/07/2019 | Breakthrough (CD+DVD A) | |
|
1. | Breakthrough |
| 2. | FANCY -Japanese ver.- | |
| 3. | Breakthrough (taalthechoi Remix) | |
| 4. | Breakthrough (Instrumental) | |
| DVD: | ||
| 1. | Breakthrough (MV) | |
| 2. | Breakthrough (Making of) | |
| 24/07/2019 | Breakthrough (CD+DVD B) | |
|
1. | Breakthrough |
| 2. | FANCY -Japanese ver.- | |
| 3. | Breakthrough (taalthechoi Remix) | |
| 4. | Breakthrough (Instrumental) | |
| DVD: | ||
| 1. | Breakthrough (MV Lip Sync ver.) | |
| 2. | Jacket Shooting Making Movie | |
| 24/07/2019 | Breakthrough (CD FC Edition) | |
|
1. | Breakthrough |
| 2. | FANCY -Japanese ver.- | |
| 3. | Breakthrough (taalthechoi Remix) | |
| 4. | Breakthrough (Instrumental) | |
| 24/07/2019 | Breakthrough (3CD+2DVD Warner Limited Edition BOX) | |
|
CD 1: | |
| 1. | Breakthrough | |
| 2. | FANCY -Japanese ver.- | |
| 3. | Breakthrough (taalthechoi Remix) | |
| 4. | Breakthrough (Instrumental) | |
| CD 2: | ||
| 1. | Breakthrough | |
| 2. | FANCY -Japanese ver.- | |
| 3. | Breakthrough (taalthechoi Remix) | |
| 4. | Breakthrough (Instrumental) | |
| CD 3: | ||
| 1. | Breakthrough | |
| 2. | FANCY -Japanese ver.- | |
| 3. | Breakthrough (taalthechoi Remix) | |
| 4. | Breakthrough (Instrumental) | |
| DVD 1: | ||
| 1. | Breakthrough (MV) | |
| 2. | Breakthrough (Making of) | |
| DVD 2: | ||
| 1. | Breakthrough (MV Lip Sync ver.) | |
| 2. | Jacket Shooting Making Movie | |
| 08/07/2020 | Fanfare (CD) | |
| 1. | Fanfare |
| 2. | MORE & MORE (Japanese ver.) | |
| 3. | Fanfare (Lee Hae Sol Remix) | |
| 4. | Fanfare (Instrumental) | |
| 08/07/2020 | Fanfare (CD+DVD A) | |
| 1. | Fanfare |
| 2. | MORE & MORE (Japanese ver.) | |
| 3. | Fanfare (Lee Hae Sol Remix) | |
| 4. | Fanfare (Instrumental) | |
| DVD: | ||
| 1. | Fanfare (MV) | |
| 2. | Fanfare (Making of) | |
| 08/07/2020 | Fanfare (CD+DVD B) | |
| 1. | Fanfare |
| 2. | MORE & MORE (Japanese ver.) | |
| 3. | Fanfare (Lee Hae Sol Remix) | |
| 4. | Fanfare (Instrumental) | |
| 08/07/2020 | Fanfare (CD ONCE JAPAN Limited Edition) | |
| 1. | Fanfare |
| 2. | MORE & MORE (Japanese ver.) | |
| 3. | Fanfare (Lee Hae Sol Remix) | |
| 4. | Fanfare (Instrumental) | |
| 18/11/2020 | BETTER (CD Regular Edition) | |
 |
1. | BETTER |
| 2. | Scorpion | |
| 3. | BETTER (Instrumental) | |
| 4. | Scorpion (Instrumental) | |
| 18/11/2020 | BETTER (CD Limited Edition) | |
 |
1. | BETTER |
| 2. | Scorpion | |
| 3. | BETTER (Instrumental) | |
| 4. | Scorpion (Instrumental) | |
| 18/11/2020 | BETTER (CD+DVD) | |
 |
1. | BETTER |
| 2. | Scorpion | |
| 3. | BETTER (Instrumental) | |
| 4. | Scorpion (Instrumental) | |
| DVD: | ||
| 1. | BETTER (MV Making Movie) | |
| 2. | Jacket Shooting Making Movie | |
| 18/11/2020 | BETTER (CD ONCE JAPAN Limited Edition) | |
 |
1. | BETTER |
| 2. | Scorpion | |
| 3. | BETTER (Instrumental) | |
| 4. | Scorpion (Instrumental) | |
| 30/11/2020 | I CAN'T STOP ME (Digital English Version) | |
 |
1. | I CAN'T STOP ME |
| 12/05/2021 | Kura Kura (CD) | |
 |
1. | Kura Kura |
| 2. | Strawberry Moon | |
| 3. | Kura Kura (Instrumental) | |
| 4. | Strawberry Moon (Instrumental) | |
| 12/05/2021 | Kura Kura (CD Limited Edition) | |
 |
1. | Kura Kura |
| 2. | Strawberry Moon | |
| 3. | Kura Kura (Instrumental) | |
| 4. | Strawberry Moon (Instrumental) | |
| 12/05/2021 | Kura Kura (CD+DVD) | |
 |
1. | Kura Kura |
| 2. | Strawberry Moon | |
| 3. | Kura Kura (Instrumental) | |
| 4. | Strawberry Moon (Instrumental) | |
| DVD: | ||
| 1. | Kura Kura (Music Video Making Movie) | |
| 2. | Jacket Shooting Making Movie | |
| 12/05/2021 | Kura Kura (CD ONCE JAPAN Limited Edition) | |
 |
1. | Kura Kura |
| 2. | Strawberry Moon | |
| 3. | Kura Kura (Instrumental) | |
| 4. | Strawberry Moon (Instrumental) | |
| 15/12/2021 | Doughnut (CD) | |
 |
1. | Doughnut |
| 2. | Wonderful Day | |
| 3. | Doughnut (Instrumental) | |
| 4. | Wonderful Day (Instrumental) | |
| 15/12/2021 | Doughnut (CD+DVD) | |
 |
1. | Doughnut |
| 2. | Wonderful Day | |
| 3. | Doughnut (Instrumental) | |
| 4. | Wonderful Day (Instrumental) | |
| DVD: | ||
| 1. | Doughnut (Jacket Shooting Making Movie) | |
| 2. | Doughnut (Jacket Member Making Video) | |
| 15/12/2021 | Doughnut (CD Limited Edition) | |
 |
1. | Doughnut |
| 2. | Wonderful Day | |
| 3. | Doughnut (Instrumental) | |
| 4. | Wonderful Day (Instrumental) | |
| 15/12/2021 | Doughnut (CD ONCE JAPAN Limited Edition) | |
 |
1. | Doughnut |
| 2. | Wonderful Day | |
| 3. | Doughnut (Instrumental) | |
| 4. | Wonderful Day (Instrumental) | |
| 21/03/2022 | Just be yourself (Digital) | |
 |
1. | Just be yourself |
| 31/05/2023 | Hare Hare (CD Regular Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD Limited Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD+DVD) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| DVD: | ||
| 1. | Hare Hare (Jacket Shooting Making Movie) | |
| 2. | Hare Hare (Jacket Member Making Video) | |
| 31/05/2023 | Hare Hare (CD ONCE JAPAN NAYEON Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD ONCE JAPAN JEONGYEON Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD ONCE JAPAN MOMO Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD ONCE JAPAN SANA Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD ONCE JAPAN JIHYO Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD ONCE JAPAN MINA Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD ONCE JAPAN DAHYUN Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD ONCE JAPAN CHAEYOUNG Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 31/05/2023 | Hare Hare (CD ONCE JAPAN TZUYU Edition) | |
 |
1. | Hare Hare |
| 2. | Catch a Wave | |
| 3. | Hare Hare (Instrumental) | |
| 4. | Catch a Wave (Instrumental) | |
| 11/12/2023 | Dance Again (Digital) | |
 |
1. | Dance Again |
| 15/12/2024 | The wish (Digital) | |
 |
1. | The wish |
| 18/12/2024 | Strategy 2.0 (Digital) | |
 |
1. | Strategy (version 1.0) |
| 2. | Strategy (Slom Remix) | |
| 3. | Strategy (House) | |
| 4. | Strategy (Moombahton) | |
| 5. | Strategy (Instrumental) | |
| 28/06/2018 | LIKEY (Digital Kronos Remix) | |
|
1. | LIKEY (Kronos Remix) |
| 21/08/2020 | MORE & MORE (Digital English ver.) | |
 |
1. | MORE & MORE (English ver.) |
| 18/12/2020 | CRY FOR ME (Digital) | |
 |
1. | CRY FOR ME |
| 09/07/2021 | HOSPITAL PLAYLIST Season 2, Pt. 4 (Digital) | |
 |
1. | Nuguboda Neol Salanghae (누구보다 널 사랑해) |
| 2. | Nuguboda Neol Salanghae (누구보다 널 사랑해) (Instrumental) | |
| 19/04/2022 | Naman Almyeon Dwae (나만 알면 돼) (D | |
 |
1. | Naman Almyeon Dwae (나만 알면 돼) |
| 2. | Naman Almyeon Dwae (나만 알면 돼) (Instrumental) | |
| 17/03/2023 | SET ME FREE (Digital Remixes) | |
 |
1. | SET ME FREE (English) |
| 2. | SET ME FREE | |
| 3. | SET ME FREE (Lindgren Remix) (English) | |
| 4. | SET ME FREE (Lindgren Remix) | |
| 5. | SET ME FREE (Tommy “TBHits” Brown Remix) (English) | |
| 6. | SET ME FREE (Tommy “TBHits” Brown Remix) | |
| 7. | SET ME FREE (ARMNHMR Remix) (English) | |
| 07/11/2023 | Heart Shaker (Digital GALACTIKA * Holiday Remix) | |
 |
1. | Heart Shaker (GALACTIKA * Holiday Remix) |
| 17/11/2023 | MOONLIGHT SUNRISE (Digital Jonas Blue Remix) | |
 |
1. | MOONLIGHT SUNRISE (Jonas Blue Remix) |
| 02/02/2024 | I GOT YOU (Digital) | |
 |
1. | I GOT YOU |
| 2. | I GOT YOU (Instrumental) | |
| 26/02/2024 | ONE SPARK (Digital) | |
 |
1. | ONE SPARK (English ver.) |
| 2. | ONE SPARK (House ver.) | |
| 3. | ONE SPARK (R&B ver.) | |
| 4. | ONE SPARK (Tropical ver.) | |
| 5. | ONE SPARK (Rave ver.) | |
| 6. | ONE SPARK (Instrumental) | |
| 01/10/2021 | The Feels (Digital) | |
 |
1. | The Feels |
| 01/10/2021 | The Feels (Digital YVES V Remix) | |
 |
1. | The Feels (YVES V Remix) |
| 01/10/2021 | The Feels (Digital The Stereotypes Remix) | |
 |
1. | The Feels (The Stereotypes Remix) |
| 01/10/2021 | The Feels (Digital Instrumental) | |
 |
1. | The Feels (Instrumental) |
| 01/10/2021 | The Feels (Digital YVES V Remix Instrumental) | |
 |
1. | The Feels (YVES V Remix) (Instrumental) |
| 01/10/2021 | The Feels (Digital The Stereotypes Remix Instrumental) | |
 |
1. | The Feels (The Stereotypes Remix) (Instrumental) |
| 01/10/2021 | The Feels (Digital EP) | |
 |
1. | The Feels |
| 2. | The Feels (The Stereotypes Remix) | |
| 3. | The Feels (YVES V Remix) | |
| 4. | The Feels (Instrumental) | |
| 5. | The Feels (The Stereotypes Remix) (Instrumental) | |
| 6. | The Feels (YVES V Remix) (Instrumental) | |
| 20/01/2023 | MOONLIGHT SUNRISE (Digital) | |
 |
1. | MOONLIGHT SUNRISE |
| 24/01/2023 | MOONLIGHT SUNRISE (Digital The Remixes) | |
 |
1. | MOONLIGHT SUNRISE |
| 2. | MOONLIGHT SUNRISE (House remix) | |
| 3. | MOONLIGHT SUNRISE (Club remix) | |
| 4. | MOONLIGHT SUNRISE (R&B remix) | |
| 5. | MOONLIGHT SUNRISE (Instrumental) | |
| 24/01/2023 | MOONLIGHT SUNRISE (Digital House remix) | |
 |
1. | MOONLIGHT SUNRISE (House remix) |
| 24/01/2023 | MOONLIGHT SUNRISE (Digital Club remix) | |
 |
1. | MOONLIGHT SUNRISE (Club remix) |
| 24/01/2023 | MOONLIGHT SUNRISE (Digital R&B remix) | |
 |
1. | MOONLIGHT SUNRISE (R&B remix) |
| 24/01/2023 | MOONLIGHT SUNRISE (Digital Instrumental) | |
 |
1. | MOONLIGHT SUNRISE (Instrumental) |
| 05/02/2024 | I GOT YOU (Digital feat. Lauv) | |
 |
1. | I GOT YOU (feat. Lauv) |
| 05/02/2024 | I GOT YOU (Digital Lo-fi ver.) | |
 |
1. | I GOT YOU (Lo-fi ver.) |
| 05/02/2024 | I GOT YOU (Digital Hyper ver.) | |
 |
1. | I GOT YOU (Hyper ver.) |
| 05/02/2024 | I GOT YOU (Digital Garage ver.) | |
 |
1. | I GOT YOU (Garage ver.) |
| 05/02/2024 | I GOT YOU (Digital Sped Up ver.) | |
 |
1. | I GOT YOU (Sped Up ver.) |
| 05/02/2024 | I GOT YOU (Digital feat. Lauv Instrumental) | |
 |
1. | I GOT YOU (feat. Lauv) (Instrumental) |
| 05/02/2024 | I GOT YOU (Digital Lo-fi ver. Instrumental) | |
 |
1. | I GOT YOU (Lo-fi ver.) (Instrumental) |
| 05/02/2024 | I GOT YOU (Digital Hyper ver. Instrumental) | |
 |
1. | I GOT YOU (Hyper ver.) (Instrumental) |
| 05/02/2024 | I GOT YOU (Digital Garage ver. Instrumental) | |
 |
1. | I GOT YOU (Garage ver.) (Instrumental) |
| 05/02/2024 | I GOT YOU (Digital Sped Up ver. Instrumental) | |
 |
1. | I GOT YOU (Sped Up ver.) (Instrumental) |
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