Its a form of music that certain producers make that acts like a metronome for mcs to scream "Rhymes" over the top of (Also know as "Bars")
It normally consists of a kick and snare that goes Bom Tsh Bomtsh
Bass lines are normally made using duck mating whistles and also kazoo's
To be proper jump up you should have an arrangement that is 32 bar intro, 64 loop of bass and breaks, 32 bar intro again copy and pasted as the 2nd break down, 64 bars of bass and breaks