"The album's centerpiece "Boys in the Wood", a slow, Southern-rock-tinged song recorded with Brenneck, was the record's first single. Heard in isolation, it didn't work, but it sounds great in the context of Underneath the Rainbow. Coming after a dull patch, it's a sudden injection of life, with a thoughtful and well-paced arrangement. Unlike the Steve Mackay-style sax on Arabia Mountain's "Mad Dog", the Budos Band's horns on this one recall Allen Toussaint's arrangements for the Band's Rock of Ages-Southern rock songs emboldened by soulful brass. Counter to the album as a whole, it's proof that Black Lips can step outside their comfort zone, craft an ambitious song, and still sound like themselves".