So..after years of lurking and learning, i thought i'd give something back to the community
I've only recently discovered the wonders of MIDI-yoke in ableton, thanks to the brilliant vimeo tutorial by Tom Cosm. The guy's a genius i tell you.
The included ALS is pretty simple to understand and manipulate: You got two MIDI tracks. One has an instrument rack, loaded with an arpegiattor and a drum rack. the second is the where the fun lies. Using midi-yoke i asigned midi-notes C3-E3 to control the arpeggiator's sync rate parameter. I then created a midi effect rack in that same rack, with 3 chains, each containing a random and pitch effects. I limited each pitch's lowest note- The 1st chain to C3, the 2nd to D3 and the 3rd to E3 and i set the range to 0. What this does, with the random effect, is let you control the probability of each note modulating the arpeggiator sync rate. The random effect spits out midi notes, and since the pitch effect only lets out the notes we specified, the lower you set the random effects probability knob- the higher the chances of that note to play and hence modulating the sync rate, and vise-versa- the higher you set it, the lower the probability of that note to play.
It may sound complicated because i suck at explaining, but it'll be much clearer once you mess with it
Here's an mp3 example of what you can expect http://www.megaupload.com/?d=UM15NWAN
and of course, here's the link to the ALS itself http://hotfile.com/dl/86261002/05ca2e4/ ... 1.als.html