Drummer Mike Portnoy (Winery Dogs, Dream Theater) recently sat in for a live performance of Rush's The Spirit of Radio with Detroit-based prog rockers Tiles. Tiles along with Next to None (Portnoy's son Max's band) were the opening acts for the Haken show at the Token Lounge in Detroit on April 25th. You can watch the performance below or on YouTube here. Tiles was Dream Theater's opening act on the Scenes from a Memory tour 15 years ago. Portnoy along with Ian Anderson (Jethro Tull), Kim Mitchell (Max Webster) and others will also be making guest appearances on Tiles' upcoming double album Pretending to Run which will be produced by former Rush producer Terry Brown, who also produced their last 2 studio albums (Window Dressing and Fly Paper). Rush album artist Hugh Syme also does all the album artwork for Tiles (he also played piano and keyboard on a few tracks), and Alex Lifeson performed on one of the tracks from the band's last studio album. Thanks to Tiles guitarist Chris Herin for the heads up and info.