Mark Ronson and Bruno Mars have been accused of stealing hit single 'Uptown Funk' by an '80s rap group.
According to TMZ, The Sequence - who were one of the first all female rap groups - claim that Bruno Mars used their 1979 cut 'Funk it Up' as the inspiration for his huge hit with Mark Ronzon.
The group's rep Kali Bower points out that the hook from both songs is the same and that there are other similarities too.
You can judge just how similar the two tunes are below:
No lawsuit has been issued by group members Angie Stone, Cheryl the Pearl and Blondy yet but there are "rumblings".
The song has been the subject of similar claims before too. Last year Gap Band claimed that there was a correlation between 'Uptown Funk' and their own hit, 'Oops, Up Side Your Head'.
The news comes after 'Uptown Funk' won the 'Record of the Year' accolade at the Grammy Awards last week (15 February). It was also the biggest selling single of 2015. The song was actually released back in November 2014, totalling sales of 2.25 million as it stands. The track spent seven weeks at No.1, and remained in the Top 40 for 39 weeks.