- 宋永珠/김수영 - 하루하루
- 송영주 퀄텟 - 하루하루 (Instrumental)
- 何浩楠 - Day by Day
- T-ara - DAY BY DAY
- T-ara - DAY BY DAY (Japanese Ver.)
- 泠音Cici - DAY BY DAY
- T-ara - DAY BY DAY (Remix Version)
- T-ara - DAY BY DAY
- emovo - Day by Day
- Fiji Blue - Day by Day
- T-ara - Day By Day (Inst.)
- 水印白 - Day by Day
- 7wiz - Day By Day
- CLC - Day By Day
- Alicestan - Day by Day
- 赵冠宇 - Day By Day
- JOY - Day By Day
- MYNAME/李贤道 - Day by Day
- YeZippo - DAY BY DAY
- Sasuke/eel - Day by Day