Mellotronists

Can't hear any 'tron on Visions of Angels.  However, I remember being stunned 
by 'tron choir on an Arthur Brown LP.  I can't remember the name of it but it 
had track called "Time Captives". There was heavy use of an electronic rhythm 
box being speeded up and slowed down. Elsewhere there was something about 
eating your peas and carrots and also something about stimulating the brain of 
traffic lights...!!)   This pre-dates even Close To The Edge, if I'm not 
mistaken.