Kim So-yeon (Korean:김소연; born October 6, 1995), known by the stage name Kassy (케이시), is a South Korean singer-songwriter. Since her debut in 2015, she has released five extended plays and numerous singles. In 2016 she competed on the survival reality show Unpretty Rapstar 3.

Discography

Extended plays

TitleEP detailsPeak chart positions
KOR
I Want Love (사랑받고 싶어)Released: January 18, 2018 Label: Nextar Entertainment, YMC Entertainment Formats: CD, digital download Track listing"I Want Love" (사랑받고 싶어) "Thought It Would Be Fine" (담담할 줄 알았어) "Chiche" (뻔해) "Don't Forget" (잊어가지마) "Listen to This Song" (이 노랠 들어요) "I Want Love" (사랑받고 싶어; instrumental)—
RewindReleased: September 5, 2019 Label: Nextar Entertainment Formats: CD, digital download Track listing"Story of Night Fall" (가을밤 떠난 너) "Love Sunset" (우리 사랑이 저무는 이 밤) feat. Jay Moon (제이문) "You and I in This Hard Day" (지친 하루 끝에 너와 나) "Like a Dream" (꿈만 같은 일이야) "Story of Night Fall" (가을밤 떠난 너; instrumental)96
Memories of Autumn (秋 추억)Released: October 26, 2020 Label: Nextar Entertainment Formats: CD, digital download Track listing"Are You Fine" (행복하니) "Nap" (낮잠) "If This Is Love" (이런 게 사랑이라면) "You're a Good Love" (넌 참 좋은 사람이었어) "Are You Fine" (행복하니; instrumental)85
Old Story (옛 이야기)Released: October 28, 2021 Label: Nextar Entertainment Formats: CD, digital download Track listing"Poem for You" (나 그댈위해 시 한편을 쓰겠어) "Pure Love" (순애보) "Yesterday" (예스터데이) "Unavoidable" (어쩌면 우린, 최선을 위한 이별인걸까) "Poem for You" (나 그댈위해 시 한편을 쓰겠어; instrumental)—
Cold Day (추운날)Released: November 29, 2022 Label: Nextar Entertainment Formats: CD, digital download Track listing"Cold Breeze Is Blowing" (찬바람이 불어오네요) "Unbroken, Unbreakable" (마치 헤어진 적 없던 것처럼) "Soulmate" (소울메이트) "Brake Away" (헤어지고 말거야) "Cold Breeze Is Blowing" (찬바람이 불어오네요; instrumental)—

Single albums

TitleAlbum details
Love & HateReleased: May 19, 2022 Label: Nextar Entertainment Formats: Digital download Track listing"Don't Wanna Leave Tonight" (늦은 밤 헤어지긴 너무 아쉬워) "Hate You" (점점 지쳐가) "Don't Wanna Leave Tonight" (늦은 밤 헤어지긴 너무 아쉬워) (Instrumental) "Hate You" (점점 지쳐가) (Instrumental)

Singles

TitleYearPeak chart positionsSalesCertificationsAlbum
KOR
As lead artist
"In My Bed" (침대 위에서)2015——N/a—N/a—N/a
"Ooh Ooh Ooh" feat. Eluphant—
"Hug Me" (쓰담쓰담)2016—
"Dream"2017—KOR: 14,869
"Let It Rain" (비야 와라)——N/a
"Listen to This Song" (이 노랠 들어요)—KOR: 14,913I Want Love
"Your Memory" (사진첩)2018——N/a—N/a
"The Day Was Beautiful" (그때가 좋았어)3KCMA: Platinum
"True Song" (진심이 담긴 노래)201914—N/a
"When Love Comes By" (이 마음이 찾아오면)2020136
"Tock Tock" (똑똑)156
"I Will Light Your Way" (너의 발걸음에 빛을 비춰줄게)202132
"Always Love You" (언제나 사랑해)20224
"Forever Love" (사랑이야)46
"Crush on You" (사실말야내가말야그게그러니까말이야)202332
"Only You" (너 밖엔 없더라)85
"Love Fool" (속는 셈 치고 다시 만나자)2024126Full Bloom
Collaborations
"Blossom, Night" (벚꽃, 밤) (PK Heman & Dorothy)2015——N/a—N/a—N/a
"The Love of Fingertips" (손끝의 사랑) (B1A4, Seo Eunkwang, Lee Changsub, Hur Young Ji, A-Jax, April, Oh My Girl & Kassy)2016—
"My Hero" (나의 영웅) (Leeteuk, Suho & Kassy)177SM Station Season 1
"Close to You" (2BiC with Kassy)—Fall in 2BiC
"Missing You" (니가 그리워) (2BiC with Kassy)91KOR: 23,209Guess I Loved You
"See You in Heaven" (별똥별) (Kassy & Basick)2017——N/a—N/a
"A Song from the Past" (이 노랜 꽤 오래된 거야) (Solar & Kassy)202058

Soundtrack appearances

TitleYearPeak chart positionsSalesAlbum
KOR
"Good Morning" (굿모닝)201762KOR: 85,005Fight for My Way OST
"The Day I Dream" (꿈꾸던 날)——N/aThe Bride of Habaek OST
"At Beginning of Love" (사랑이 시작될 때)2018—Wok of Love OST
"Same Memories" (같은 기억)—Let's Eat 3 OST
"Take My Hand" (손을 잡아줘)—Webtoon "Yeonnom" OST
"Greeting" (마중)2019—Chocolate OST
"Love Me Like You Used To" (날 사랑한 처음의 너로 돌아와)2020186Start-Up OST
"Waiting for Spring" (오늘도 난 봄을 기다려)202152Bimil:ier Vol. 2 "Waiting for Spring"
"Nothing Left To Say" (어떤 말도 할 수가 없는 나인데)111My Roommate Is a Gumiho OST
"One Sunny Day" (어느 햇살 좋은 날)107Hometown Cha-Cha-Cha OST
"You Are Falling All Night" (밤새 니가 내려)41The Listen OST
"Still Parting From Us" (느린 이별) as part of "The Listen", along with Solji, Kim Nayoung, Seunghee, HYNN198
"Aching" (아리운)2022—Alchemy of Souls OST
"Broke Up Today (2024)" (오늘 헤어졌어요 (2024))2024169Reunion Counseling OST
"Again"2026To My Beloved Thief OST

Other charted songs

TitleYearPeak chart positionsSalesCertificationsAlbum
KOR
"Story of Night Fall" (가을밤 떠난 너)20193—N/a—N/aRewind
"Are You Fine?" (행복하니)202079Memories of Autumn
"Poem for You" (나 그댈위해 시 한편을 쓰겠어)202133Old Story
"Don't Wanna Leave Tonight" (늦은 밤 헤어지긴 너무 아쉬워)202222Love & Hate
"Cold Breeze Is Blowing" (찬바람이 불어오네요)110Cold Day

Filmography

Television

YearTitleNetworkNotesRef.
2016Unpretty Rapstar 3MnetContestant
2019King of Mask SingerMBCContestant as "Destiny" (eps. 201–202)
2021The Listen: Wind BlowsSBSCast Member

Web

YearTitleNotesRef.
2021Bimil:ier (Secret Atelier)Featured artist, Episodes 5-8

Awards and nominations

YearAwardNominee / WorkResultRef
2019Brand of the Year AwardsFemale VocalistKassyWon
3rd KY Star Awards10 Million Song LogsWon[citation needed]
9th Gaon Chart Music AwardsDiscovery of the Year – BalladWon
Melon Music AwardsTop 10 ArtistsNominated
Song of the Year (Daesang)The Day Was BeautifulNominated
Best BalladNominated
202034th Golden Disc AwardsDigital BonsangNominated
29th Seoul Music AwardsBonsang (Main Prize)Nominated
Popularity AwardNominated
K-Wave AwardNominated
Best R&B AwardRewindWon
2022Melon Music AwardsArtist of the YearKassyLonglisted
Top 10 Artist AwardNominated
Best Female Solo ArtistNominated