When we think of jam bands, we often think of long, extended solos. String instruments that go on for ages playing light, bright, dancy tunes. Acoustic guitars, banjos, mandolins, violins—anything.

When you put on a classic rock album, one thing you’re sure to get is a sonic punch to the gut. In a good way, of course! The heft and power of a classic rock record is meant to, well, rock your world ...