Do you think they knew they ripped off Roundabout by Yes at the very top, or was it one of those instances when you don't realize that the riff you think you just wrote is in reality just a derivative phantom of something you heard elsewhere?
maybe a mutual influence? pentangle another contemporary of theirs also have similiar sounds on their recordings
originally released on Quincy Jones' Qwest.tv, for a long time this video was only available in parts, with commercials interspersed. here it is uncut, and if you love jazz, treat yourself to 12 minutes or so of one the best performances you'll ever experience.