When you think of good chemistry between rhyming partners on the mic, you all should start thinking about N.B.S. These emcees are on point.  This song an video show and prove.  Definitely start looking for some of their music.  You can cop their latest album, The Prelude, on Itunes.  You can also check out DatPiff for some of their free mixtapes. They are definitely worth checking into.  The Boston scene is heavy with lots of talented emcees, but do not pass on these artists.  You will regret it.