| 첫사랑 (Drama Ver.) | Epitone Project | 3:59 | ||
| Not him | 20 Years of Age | 3:13 | ||
| I miss you | V.O.S | 4:56 | ||
| Don’t Push Me (Original Ver.) | WENDY, SEULGI | 3:18 | ||
| Take My Hand | Kassy | 3:40 | ||
| Sunny Day Rainy Day (feat. Kassy) | Sanchez, Kassy | 4:09 | ||
| I Love You Boy | Suzy | 4:24 | ||
| 이럴거면 헤어지지 말았어야지 | PARK WON | 4:00 | ||
| Our Story | 옹성우 | 3:28 | ||
| 어떤 말도 | Crush | 4:31 | ||
| The Reason | SEUNGKWAN | 4:00 | ||
| i don't miss u | BUMZU | 3:42 | ||
| all of my life | PARK WON | 4:09 | ||
| Good night | JEONG SEWOON | 3:57 | ||
| If there was practice in love | Lim Jae Hyun | 4:15 | ||
| You are falling all night | Kassy | 3:14 | ||
| Trust in me | Lim Young Woong | 4:02 | ||
| Beaver Beat | The Folie Phantom, Kassy | 3:39 | ||
| When the starlight shines (feat.Kassy) | 2BIC, Kassy | 3:40 | ||
| I'll be with you every day | HWANG MIN HYUN | 3:51 | ||
| Perhaps Love | Eddy Kim | 4:53 | ||
| Unlock more with Songs Like X Pro | ||||
| Nap | Kassy | 3:25 | ||
| Scent | Sam Kim | 3:58 | ||
| Beautiful goodbye | CHEN | 4:29 | ||
| Your Regards | Ha Yea Song | 3:59 | ||
| 묘해, 너와 | Acoustic Collabo | 3:51 | ||
| Your scent | Jung In&Gary | 3:28 | ||
| The Way To Me | JOY | 4:11 | ||
| Half | Jin Minho | 4:04 | ||
| Road (song by IU, Henry, Jo Hyunah, Yang Da Il) | god | 4:29 | ||
| 빌려줄게 | Shin Yong Jae | 3:31 | ||
| Nothing Between Us | Sojung | 3:17 | ||
| Foolish Love | M.O.M | 3:32 | ||
| See you later | Jang Deok Cheol | 3:36 | ||
| Time Walking on Memories | NELL | 6:29 | ||
| A song from the past | Solar, Kassy | 3:55 | ||
| Do you want to walk with me? (Romance 101 X Jukjae) | Jukjae | 3:46 | ||
| Pieces | Zalex, Kassy | 3:56 | ||
| DOOR (Your Moon) | JEONG SEWOON | 3:48 | ||
| 살다가 | SG Wannabe | 4:43 | ||
| If Only | KIMSEJEONG | 4:15 | ||
| Your Shampoo Scent In The Flowers - Ballad Version | SAya, Jae Yeon | 4:46 | ||
| More Than Words | SHAUN | 3:15 | ||
| The First Love | MINSEO | 3:35 | ||
| Waiting for Spring | Kassy | 3:21 | ||
| 첫사랑 | Epitone Project | 4:15 | ||
| With Laughter or With Tears | Seo In Guk | 3:14 | ||
| 이럴거면 그러지말지 | Baek A Yeon, Young K | 3:32 | ||
| LET ME LOVE YOU (DUET. 찬열 OF EXO) | Junggigo | 3:30 | ||
