I saw a brilliant show by Jonsi from Sigur Ros. Wonderful young musicians, deft use of old and new technology. One guy was playing electric bass and Tenori On (or Monome).
At the climax of the show there was a harmonized vocal thing initiated by what appeared to be a white, outsized Mellotron that required more attention between songs that the average 400.
Is Jonsi using a M4000 during this tour ? Whatever he is using it sounds great.
If he is coming your way it is is well worth your time to go.
gino