Via: TMZ.com
The songwriter in question — named Antwann Frost — filed the lawsuit two days ago … claiming Swizz hit him up in 2007 to help put together a hit single for rapper Cassidy’s then incomplete album.
According to the docs — obtained by TMZ — Swizz assembled the “drum patterns” and Frost created “all of the other original musical components that shaped and defined” the track that would become a chart-topping hit … spawning remixes by Kanye West, Ne-Yo, and Chingy.
The song was released soon after — at which point, Frost claims, Swizz lowballed him with a $5,000 cash offer and 5% ownership of the song … while Swizz and Cassidy got the bulk share.
Frost rejected the offer … and now dude’s suing for $1,500,000 — claiming he deserves equal partnership in the song with Swizz and Cass. No word yet from Camp Swizz.