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The Mamas & the Papas

In 1967, a subsequent and slightly more popular cover of Dedicated To The One I Love by the Mamas & the Papas was released on the Dunhill label went to number 2 on the Billboard Hot 100, kept from number 1 by "Happy Together" by The Turtles. This version also reached number 2 on the UK's Record Retailer chart.

Michelle Phillips

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.
~Source: Wikipedia