Led Zeppelin's 'Whole Lotta Love' is a classic rock song released in 1969. It was the band's first single from their second album, Led Zeppelin II. The song has become one of the most iconic and recognizable songs in rock music history. The title of the song is derived from the phrase 'Whole Lotta Love', which is a slang term for expressing strong affection or admiration. The term was popularized by blues singer Willie Dixon in his song 'You Need Love'. The song has been covered by numerous artists and has been featured in many films and television shows.