Fans already know it, but these eight classic-rock covers (including "Mr. Soul") prove that, beneath all the virtuosity and Dungeons and Dragons fantasia, Rush have always been a decent bar band. With this disc, the trio finds a surprisingly reserved way to celebrate its thirtieth anniversary.

“Help Me”

Joni Mitchell wrote and recorded this song for her album Court and Spark, but she had to switch from her regular band to make the song sound exactly the way she wanted. "I had attempted to play my music with rock & roll players," she told Rolling Stone. "They’d laugh, 'Awww, isn't that cute? She's trying to teach us how to play.'" Mitchell switched to a jazz band, Tom Scott’s L.A. Express, and scored the biggest hit of her career in the process.