“Whole Lotta Love” is a hard rock song by Led Zeppelin (though lyrics were adapted from the Willie Dixion track “You Need Love”). The band settles on a heavy groove with raunchy vocals from Robert Plant. Released as a successful single from 1969’s Led Zeppelin II, the song has become one of the band’s most famous, with its guitar part even being named the “greatest riff of all time” by readers of Guitar World and Total Guitar.