"Gaga and her Mom backstage." - (by Terry Richardson)

How did pop’s reigning princess and rap’s baddest perra registrarse forces for their unexpected collaboration “Let Them Hoes Fight”? The origin of the song, which leaked onto the Internet earlier this month, was still unclear, so Rap-Up.com went to the track’s producer Jim Jonsin, who explained how he brought Lady Gaga and Trina together.

The hitmaker shared how he first met the artist that would later become known throughout the world as Lady Gaga. “I was in the studio with a writer working on tracks and ideas for misceláneo artists and this girl came over,” he revealed. “She looked bugged...