An all female rap group from the early '80's have claimed that Mark Ronson and Bruno Mars have copied their song for hit, 'Uptown Funk'.

Kali Bower, the spokesperson for Sequence, told TMZ that both songs have similar hooks and other similarities.

The song in question is 1979's 'Funk It Up'. 

'Uptown Funk' has received almost a billion and a half plays on YouTube. 

The Sequence are Cheryl Cook (Cheryl the Pearl), Gwendolyn Chisholm (Blondie) and lead singer/rapper Angie Stone (Angie B). They were signed to the Sugar Hill label in the late-1970s and early-1980s.

Stone went on to record with Mantronix, Lenny Kravitz, Gerry DeVeaux, and Mary J Blige. She has a son with D'Angelo.

Angie Stone was signed to Gerry Deveaux's label/imprint DeVox Records. The DeVeaux co-produced Angie Stone album 'Black Diamond' was voted Best Album of The Year in the U.S. by Billboard, and was an international platinum seller. 

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Listen to Sequence's 'Funk It Up, Mark Ronson and Bruno Mars' 'Uptown Funk' and Angie Stone's 'Lifestory' below: