Rockboy K9 keeps the new music coming as he releases “What Chain” off his forthcoming project, 187 EP, which drops in July.

“What Chain” is part of K9’s ‘187’ movement which will encompass street art posters that will begin to appear in the L.A. and Chicago street. All This leading up to his new EP entitled ‘187’ which will feature artists such as BJ The Chicago Kid, Kyle, Rockboy Bam and many more June of 2014.

Rockboy also handles production on the track.