I've sent hundreds of Beatles docs about their use of backwards loops and speeding up and reducing tape speed to reach a certain desired tone.Best example is how George Martin slowed down a version of Strawberry Fields to match the key of another(You can hear the cut at exactly the one minutes mark)Alsi, session musicians were called in to do some parts of Forever Changes but Michael Stuart has said you couldn't just have some hired musicians do some tracks and it would sound as good as LOVE performing themselves because he said LOVE played with a certain hard edge while the studio musicians merely just played the notes rather uninspringly.Did you feel SAC had a certain hard edge that most studio groups couldn't have quite duplicated?