Image copyright Getty Images Image caption Three 6 Mafia are shown during a photo call ahead of the first official induction of hip-hop into the Rock and Roll Hall of Fame
Three 6 Mafia, Bone Thugs-N-Harmony and Portishead have been involved in a scuffle at an event in Nashville, Tennessee.
The hip-hop artists, and other performers, were performing in the south of the US city at an event to celebrate celebrating emerging talent in music.
Portishead frontman Geoff Barrow tweeted a picture of a man with a bandage on his face.
It was unclear how the fracas started or if any arrests were made.
The concert was for The Recording Academy.
It describes itself as the “industry’s premier membership organisation, representing music creators throughout the world”.
It hosts the annual Grammy Awards in Los Angeles.
Artists covered some of the biggest hits of all time at the event, including the classic Aerosmith ballad “Walk This Way”, a collaboration between Taylor Swift and her beau Joe Alwyn and the debut album of XXXTentacion, which is selling briskly.
At one point, the track of Las Vegas rapper Swae Lee from Rae Sremmurd broke out during the performance and Lee ran on stage to join in.
The country singer Kelsea Ballerini also appeared on stage to sing Aerosmith’s “Dream On”.