SS501's Kim Hyung Jun released his solo debut track, "Girl"! The track was previously revealed during SS501 concerts and it received much love amongst fans. Indeed, fans may love it even more when they discover that the song was re-arranged to become his gesture of gratitude for everyone stood by his side. Produced by hit composer Rado (the man behind B2ST's "Soom" and MBLAQ's "Stay"), "Girl" features a pop-dance rhythm with an addictive melody which is tempered by Kim Hyung Jun's mature voice. The star also teased fans with a photo of a beautiful lady on his Twitter, and fans are assuming that its a hint of the featured 'girl' in his upcoming music video. We'll have more details on his video soon, but until then, check out the song below! Source: Newsen via Nate, Naver Music