"Bron-Y-Aur Stomp" was originally called "Jennings Farm Blues" and recorded as an electric arrangement, at the end of 1969. It was subsequently reworked as an acoustic number and featured Bonham playing spoons. The closing track, "Hats Off to (Roy) Harper", was based on the Bukka White blues song "Shake 'Em On Down" and named as a tribute to their friend and folk singer, Roy Harper. The original LP credited the arrangement to "Charles Obscure", a band in-joke. It features Plant's voice fed through a vibrato amplifier.