Oh, and here are the performances themselves, since the ones I linked to a while back have been taken down:

[ame]http://www.youtube.com/watch?v=P5_0DzMVf1M[/ame]

[ame]http://www.youtube.com/watch?v=s1C9UBp9zN8[/ame]

[ame]http://www.youtube.com/watch?v=pRQ1qkGxoR0[/ame]

[ame]http://www.youtube.com/watch?v=XByaqHhBFqE[/ame]

40 years ago... wonder where all those music fans are now?