BPM=120,SAMPRATE=40960,T=t/SAMPRATE*BPM/60*32768,tri=(x,y)=>abs((x%y)-y/2)*2,high=x=>t*2**([0,3.5,7,10.5,14,17.5,21,24.5,24.5,21,17.5,14,10.5,7,3.5,0][(T>>14)&x&15]/12)/4&63,h1=tri(high(15),64),bass=x=>(t/16*[1,1,1,1,1,1,1,1,1.35,1.35,1.35,1.35,1.5,1.5,1.5,1.5][(T>>14)&x&15]&47),b1=tri(bass(15),64),h2=tri(high(13),64),b2=tri(bass(13),64),h3=tri(high(11),64),b3=tri(bass(11),64),kick=sin(sqrt(T/128%256)*16)*32+32,snare=(t*sin(T>>3)*(T>>15&1)&63)*(-T>>13&7)/3.5,[h1,h1+b1,h1+b1+kick,h1+b1+kick+snare,h2+b2+snare,h2+b2+snare+kick,h3+b3+snare,(h3+b3)/3+(h2+b2)/3+(h1+b1)/3+kick+snare][(T>>19)%8]