 Led Zeppelin performed "Killing Floor" live in 1968 and 1969, and it became the basis for "The Lemon Song".In some early performances Robert Plant introduced the song as "Killing Floor"; an early UK pressing of "Led Zeppelin II" showed the title as "Killing Floor" and was credited to Chester Burnett (Howlin' Wolf's legal name).Led Zeppelin's version was performed at a much slower tempo (until the bridge) and with some different lyrics.