Claim: Hwang Kwanghee (born August 25, 1988) has three collaboration singles, one of which was collaborated with  G-Dragon.
Evidence: Hwang Kwang-hee (Hangul: 황광희; Hanja: 黃光熙; born August 25, 1988), also known mononymously as Kwanghee, is South Korean singer, actor, and TV personality. List of collaboration singles with selected chart positions, showing year released and album name "그대만 보여요" (I Can Only See You)
with Kim Ye-won "맙소사" (Mapsosa)
as HwangTaeJi, with Taeyang and G-Dragon "Your Night"
with Gaeko feat. Oh Hyuk