No I've thought about this some more, one LFO is fine (well it's not, but in the context of my question it is). One LFO could be applied to multiple voices seperately if there is one VCA per voice. I'm not asking for each voice to have a seperate LFO, just that the one LFO is applied to each voice depending on the level of AT for that voice. The answer depends on whether there is a single VCA at the output of the LFO that feeds each voice equally, or if there is a VCA at the input of each voice, ie 6 VCAs? If 6 VCAs then a firmware change could tell each VCA to let through a different level of the LFO depending on AT to that voice.