Then one night on acid in about 1994 I found they were much easier to change than records when the walls were breathing and the arm of the record player was fracturing into a million brightly coloured, impossibly complex patterns. And rather than huge black discs that I knew I had to be careful with as the whole of existence shattered before my eyes, I could just put a hand sized sparkly thing in a slot - once I'd managed to stop staring at the rainbow rays shooting off of it - and press one button to have a whole album instead of the adventure of turning a record over in what seemed like 2 microseconds after I'd put it on.