The sold-out arena tour in support of 2012′s Clockwork Angels, Rush's 19th studio album, saw the Canadian rockers playing material not performed since the '80s, alongside a string section in many cases. For our exclusive preview, we'll show you footage of some of those rarely performed songs as well as two performances with the "Clockwork Angels String Ensemble."

The Radio.com exclusive performances will include: "Grand Designs," "Middletown Dreams" and "Territories" from 1985′s Power Windows; "The Body Electric" and "Red Sector A" from 1984′s Grace Under Pressure; and "The Wreckers" from Clockwork Angels.

For two weeks following our exclusive stream, two of the performances � of "Red Sector A" and "Middletown Dreams" � will be available to stream on-demand.

While diehards will never tire of seeing Geddy Lee, Alex Lifeson and Neil Peart work their alchemy onstage, the string section featured on the tour did receive a lot of attention from fans. The original concept for the tour was to start with a set of rarities, and then perform Clockwork Angels in the second set alongside the string section. However, it ended up that the strings brought new life to some older songs as well, including "Dreamline," "Red Sector A" and "YYZ."