There is a legend that (ABBA) sound engineer Michael B. Tretow used to have a small (and completely illegal) FM transmitter in the studio. When he thought he ha

There is a legend that (ABBA) sound engineer Michael B. Tretow used to have a small (and completely illegal) FM transmitter in the studio. When he thought he had the mix right, he'd patch the sound out to that and then go down to the car park to listen to the song on his car stereo. If it still sounded good, fine, else, it was back to the draw... er, mixing board.