As longtime lovers of the sound of the Mellotron (Craig's 1st musical instrument was his M400) our philosophy is... "There is no such thing as too much Mellotron". We have an original M400 (W/4 tape frames) an M4000D (the big one), and two Mellotron Micro's. We also used several Mellotron Apps on our 1st album. Long live the Mellotron!