하연 – 널 비우다
Track 01 from Single "널 비우다"
Release Date: 2022.10.20
하연 – Never be okay
Track 01 from Single "Never be okay"
Release Date: 2022.08.12
고승형, 하연 – 사랑은 봄 여름 가을 겨울?
Track 01 from Single "사랑은 봄 여름 가을 겨울?"
Release Date: 2022.05.19
하연 – How Do I Look
Track 01 from Single "How Do I Look"
Release Date: 2022.04.20
하연 – Sending You
Track 01 from Single "Sending You"
Release Date: 2016.05.20
하연 – 너와 함께
Track 01 from Single "너와 함께"
Release Date: 2016.11.25
하연 – 비타민 사랑
Track 02 from EP "무지개 사랑"
Release Date: 2012.04.02
하연 – 무지개 사랑
Track 01 from EP "무지개 사랑"
Release Date: 2012.04.02
하연 – 기다리는 비
Track 01 from Single "Highup Project Vol.12B"
Release Date: 2019.04.30
하연 – 똑똑똑
Track 01 from Single "Highup Project Vol.6"
Release Date: 2017.09.21
하연 – idkwtd (Original ver.)
Track 01 from Single "idkwtd"
Release Date: 2021.06.24
하연 – Eyes on you
Track 01 from Single "Eyes on you"
Release Date: 2020.10.07
하연 – Walk Away
Track 01 from Single "Walk Away"
Release Date: 2021.01.11
하연 – 그대가 사랑인줄 몰랐어요
Track 02 from EP "씨티헌터 OST"
Release Date: 2007.01.24