1Piece – 내일 (Vocal 신유미)
Track 02 from Single "진심을 그대에게 : The Most Vivid Side Of '70s Korean Pop & Rock"
Release Date: 2018.02.10
1Piece – Let’s Get It (Feat. Dok2) (wan9u Remix)
Track 02 from EP "Alone"
Release Date: 2017.04.27
1Piece – Alone (Feat. Shinyoume)
Track 01 from EP "Alone"
Release Date: 2017.04.27
1Piece – Let’s Get It (Feat. Dok2)
Track 01 from Single "Let's Get It"
Release Date: 2015.11.25
1Piece, APIECEOFONION – Alone (Remix)
Track 01 from Single "Digitalian Now Vol.3"
Release Date: 2017.10.31