\ufffdPitch increase from the motor controller (not control panel)\ufffdin the middle of Battle Of Glass Tears (1971)
It sounds daft!
Tension backed off pitch roller for\ufffddetuned wobbly\ufffdBrass sound in Talking Drum intro (1974)
That's not a Mellotron. That's a tube with weird kind of bag attached to it that Fripp whirled about his head in the studio. Sid Smith's book has a photo of it.