Considering using the recording booth as a venue to sh*t-talk your enemies? Underground beatsmith Astronote and West Coast rapper/producer Blu think you should reconsider. On a new promo single off the former’s latest full-length, Blu reminds listeners that loose words can cost lives, and advises, “You’d better keep them Rhymes on Paper.” To back his collaborator’s cautionary bars, the headliner turns in a mellow, breakbeat-driven groove that shifts gears on the back end. An unknown director’s official visuals round out the package. Feeling it? More awaits on Astronote’s Astroblacked LP, available in stores and online as of last Tuesday.