Originally released on The Joshua Tree, “With or Without You” is one of U2’s biggest songs. The unabashedly romantic ballad was the band’s first #1 hit in the U.S. and Canada, and even appears in Rolling Stone’s list of “The 500 Greatest Songs of All Time.” But as iconic as “With or Without You” might be, its B-side “Walk to the Water” has always been the more interesting song.

“Walk to the Water” is a bit more experimental than the usual U2 fare; its meandering rhythms, odd studio effects, and coruscating guitar tones sound like holdovers from The Unforgettable Fire. Meanwhile, Bono’s stream-of-consciousness lyrics spin random memories of a girl with cherry-red lips and golden hair who’s wearing white canvas shoes and a silver necklace — a girl that he can never apparently have as he cries out “Let me in/Let me love you.”

Compared to the band’s many stadium-friendly anthems (e.g., “Where the Streets Have No Name,” “Pride (In the Name of Love)”), “Walk to the Water” possesses a much smaller, more intimate and internal scope, but that’s precisely what makes it so interesting and beguiling.