An older Alpha band: The Who.

"A Quick One While He's Away" @ Rolling Stones' Rock 'n' Roll Circus
[youtube]http://www.youtube.com/watch?v=OjkGHn8_Z2c[/youtube]

"Sparks" @ Woodstock (an instrumental filled with "Alpha" energy)
[youtube]http://www.youtube.com/watch?v=3R4hXlWur9Y[/youtube]