Jon Anderson used some interesting new technologies during his one man
show "tour of the universe" this fall.
http://www.jonanderson.com/He used TC Helicon's VoiceLive processor to create vocal harmonies.
This processor is a digital pitch shifter that generates up to four
part harmonies. It is also a pitch correction processor. (We know
Jon could use that live).
http://www.tc-helicon.tc/VoiceLiveHe decided NOT to use a midi sequencer to control the VoiceLive
processor. He used a midi-equipped acoustic guitar.
I am just guessing, but I would think that the midi guitar could cue
the processor re: the key and tempo. Other stuff?
Clay