Make a bass on the kick using the beat box 8 with attack turned all the way down then add a note track on the pulve in 1/8 time with the beat in c1 (or whatever key but in that octave). Is the lead on an HB? If it is then you can just copy and paste in a lower octave then mess about with the waveforms and modulate, plus try chucking a reverb and a slope on it to bring out different frequencies. Also you could try putting a compressor on the snare side chained with the beat - just snappies it up a bit :)