A fabulous, early example of psychedelic pop, this exquisite ballad is one of the Yardbirds' most treasured mid-'60s recordings. The main hook of the song refutes the standards of the pop "chart" ethos of the day, being led by a wordless, droning almost Gregorian chant, which mirrors the song's main melody. Rather than including all of the instrumental virtuosity of the group's other records, the song itself sounds as though it was conceived as a record, rather than a "performance" piece, and is filled with an undeniably full atmosphere. The lyrics are dark and foreboding, giving the listener a peek into the depressed and repressed mind of the lyricist. Different than anything that the band had cut before, it was a surprise Top Ten hit record in the U.K., and also made a dent in the U.S. charts, paving the way for the band's ever-growing cult status among the early "underground" movement of the time.