Alex Lifeson

They're collaborating with Toronto-based Henderson Brewing.

"He's my absolute best friend and always was. That's not going to change."

Guitarist releases instrumental tracks titled “Kabul Blues” and “Spy House.”

Surviving Rush members talk regularly about collaborating.

Rush guitarist knows his desire to play will return, but doubts he and Geddy Lee will reunite.

A birthday party and Neil Peart both played a role in making the collaboration happen.

Veteran will be 85 when 'Nobody Told Me' is released in February.