"Dedicated to the One I Love" is a song written by Lowman Pauling and Ralph Bass which was a hit for the "5" Royales, the Shirelles and the Mamas & the Papas. Pauling was the guitarist of the "5" Royales, the group that recorded the original version of the song, produced by Bass, in 1957. Their version was re-released in 1961 and charted at number 81 on the Billboard Hot 100.

A cover version recorded by American girl group the Shirelles reached number 83 in 1959. This version was re-released In 1961 and reached number 3 on the Billboard Hot 100 chart and number 2 on the R&B charts. The song was subsequently included on their 1961 album Tonight's the Night.

A subsequent and more popular cover version by the Mamas & the Papas released on the Dunhill label went to number 2 on the Billboard Hot 100 in 1967. This version also reached number 2 on the UK Singles Chart. The lead singer on the Mamas & the Papas version was Michelle Phillips. It was the first time that Phillips was given the lead over Cass Elliot. The song was also included on the group's 1967 album The Mamas & The Papas Deliver.

While the song mixes of the group's singles differ significantly from their album counterparts with some frequency (Words of Love and Creeque Alley, in particular, feature overdubbed instruments that don't appear on the album versions of the songs), Dedicated to the One I Love uses the same mix for both single and album. However, the mono and stereo versions differ dramatically: the double-tracking of Michelle's voice is much more prominent in stereo versions of the song, while in the original mono single and mono album versions, the group's four voices are blended together more equally, particularly at the end of the song. In addition, the piano is brought much more to the forefront of the mono mix.

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