Long Line Theory, made readable for humans. Original : http://www.pouet.net/topic.php?which=8357&page=13 Render (original, but the result is the same) : http://bit.ly/ny4Ds3

LLT.bytebeat

intro= ((sb=t>0xffff)&0),
background=
    (((y=Math.pow(2,[15,15,23,8][t>>14&3]/12))&0)
    +(
      ((y*t*0.241)&127-64)
      +((y*t*0.25)&127-64)
    )*1.2),

drum=
    (
      ((a=1-(t&0x7ff)/0x7ff)&0)
      +(((5*t&0x7ff)*a)&255-127)
      *((0x53232323>>(t>>11&31))&1)*a*1.0

      +(((d=(14*t*t^t)&0x7ff)*a)&255-128)
      *((0xa444c444>>(t>>11&31))&1)*a*1.5
      +((a*a*d*(t>>9&1)&0xff-0x80)*0.1337)
    )*sb,
instrument=
    +((g=(t&0x7ff)/0x7ff)&0)
    +((g=1-(g*g))&0)
    +((h=Math.pow(2,([[15,18,17,17,17,17,999,999,22,22,999,18,999,15,20,22],[20,18,17,17,10,10,999,999,20,22,20,18,17,18,17,10]][((t>>14&3)>2)&1][t>>10&15])/12))&0)
    +(
      ((h*t&31)+(h*t*1.992&31)+(h*t*.497&31)+(h*t*0.977&31)-64)
    )*g*2.0*sb,


intro+
Math.max(
  Math.min(
  instrument+background+drum
,127),-128)