| "Must Be Love" | ||||
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| Single by Cassie featuring Puff Daddy | ||||
| Released | April 14, 2009 | |||
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| Length | 4:34 | |||
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| Producer(s) | Mario Winans | |||
| Cassie singles chronology | ||||
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| Puff Daddy singles chronology | ||||
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"Must Be Love" is a song recorded by American singer Cassie. It features guest vocals by American rapper Puff Daddy, who also co-wrote the song with Aion Clarke, Michael Jones, Leroy Watson and the producer Mario Winans. The song was released for digital download in the United States on April 14, 2009, by Atlantic Records under the Bad Boy imprint, impacting urban radio stations in that region on April 27, 2009.
Cassie stated she had fallen in love with the "soulful R&B record" after it was lingering around in the Bad Boy studios, with demos initially being recorded by other artists, and she immediately wanted the track for herself before having the opportunity to try it out. She considered it an "honor" to have Puff Daddy featured on the song. It was well received by music critics, who complimented its minimalist style recalling Bad Boy Records' classic hit singles of the 1990s.
"Must Be Love" peaked at number fifty-six on the US Billboard R&B/Hip-Hop Songs chart. It received remix versions and was sampled by various artists such as Busta Rhymes, Day26, Trey Songz, J. Cole and Jacques Greene. The song's accompanying music video was directed by Bernard Gourley and features Cassie and Puff Daddy in different sides of a wall from adjacent apartments while performing the record to each other. Cassie appreciated the treatment had a "nice story" that wasn't overdone which she felt added warmth to it allowing Diddy to have a bigger role in the visuals.