When you’re part of one of the biggest metal bands in history, you carry a certain mystique—becoming an inspiring figure of rock ... while he was watching one of metal’s forefathers, Led Zeppelin.

Most artists aren't meant to stick around forever, but once they put out these songs, there was no way of going back to the status quo.

Led Zeppelin’s sophomore effort featured six new original tunes co-written by singer Robert Plant and guitarist Jimmy Page.