Warbling doesn't make it sound like a Mellotron... It makes it sound like a sick Mellotron. Mellotrons are supposed to maintain pitch and consistently reproduce the sound on the tapes.
In a message dated 6/30/2009 2:33:59 P.M. Eastern Daylight Time, tspit74@comcast.net writes:
Sounds like a mellotron, warble and all.