It's Movember -- the month where mustaches rule and serve as a way of brining awareness to prostate cancer. We're teaming with Diffuser.fm and Loudwire to take a look a several notable rock mustaches, beginning with the musician getting a trim to the left.

How well do you recognize this stache? Here's a few hints: The rocker in question got his start in music singing in bands named Ibex, Wreckage, and Sour Milk Sea before finally finding fame in the '70s. Behind that mustache lies a tenor voice that sang plenty of hits and entertained millions as both the frontman for a band and to a lesser extent as a solo artist. Think you know who it is now?