Metamorphosis includes prior single “Herman,” and it ends, surprisingly and delightfully, with a cover of Aerosmith’s 1975 hard rock classic “Sweet Emotion,” a song that is now 50 years old.

Putting their spin on more familiar Babys cuts like “Midnight Rendezvous” and “Head First," alongside Hamilton-penned Aerosmith tracks like “Sick as a Dog” and “Sweet Emotion,” Close ...