Today in Rock

1965: Pink Floyd plays their first gig at the Countdown Club in London.

Pink Floyd in 1965.

1991: Metallica hits #16 with "Enter Sandman".

The "Enter Sandman" 7" single cover.

1994: The live documentary 'Unledded,' which reunites Robert Plant and Jimmy Page onstage, airs on MTV. It features four live acoustic versions of Led Zeppelin favorites and eight new Page-Plant collaborations.

The 'Unledded' DVD cover.