This is the first rock song to use electronic drums. With the help of an electronics expert the group had on hand, Carl Palmer created a system where his drum kit would trigger programmed sounds. "In the middle you hear all these atmospheric preprogrammed sort of keyboard sounds," he said in his Songfacts interview
. "But they're actually all being triggered by the drums with a mitigator on the floor where I could have an octave divided, change the sound up or down to each individual sound. And there were roughly eight of them. So those eight, 16, probably 24 sounds, the same sound, up the octave and down the octave.
So that was my first and my main sort of contribution, really. It never got picked up on because it was so far left - it was so far in front that people thought they were keyboard sounds. So we didn't really bother in explaining that, No, they're not. We just let it go, because we were just after creating new sounds and things."