(Update: The csound package is now available on CRAN.)
Do your random variables need to groove more? Of course they do. That's why I've been working on the upcoming csound package for R, which connects to Csound computer synthesis software to make any sound imaginable. Your computer'll be the hippest sample space on the randomized block.
Hey, even The Bee Gees had to start somewhere. That's frequency-modulated tones with every parameter normally distributed, and bursts of noise uniformly distributed. Here's the other way around:
Can you handle these hot beats?