The boys of MBLAQ have recently unveiled their music video for their second title track, "Stay", and fans were impressed by the sharp choreography the boys had locked down. Recently, J. Tune Camp released a behind-the-scenes video of their dance rehearsal, which features MBLAQ's beloved sunbae, Rain! The two are known to share a close relationship, as Rain even contributed a track for their latest album, "BLAQ STYLE". In the video, Rain is seen supervising the boys' dance rehearsal, and occasionally jumps in now and then to advise them on how to deliver a crisp move. Fans can see Rain's approval of his MBLAQ boys, as they throw in everything they've got into their practice. Check out the video below! Tip: adelheidsmith