Peter Frampton

Guitarist explains how he ended up on two 'Rockstar' tracks.

Guitarist previously said he was stepping away from touring.

He also played with the Rolling Stones, David Bowie, David Lee Roth and others.

Event announcement comes after he vowed to keep fighting debilitating illness at end of farewell tour.

He and Steve Marriott were desperate to be taken more seriously despite early success.

Heartthrob rocker faced immense pressure to quickly follow up blockbuster 'Frampton Comes Alive!'