Kanye West has quit Tidal in a move widely seen as escalating his feud with fellow rapper Jay-Z.
The rapper was one of a number of music stars - including Usher, Calvin Harris and Rihanna - who launched Jay-Z's subscription-based music streaming service in 2015 but after a dispute about money, he has quit the company.
A source told TMZ: "Kanye has been unhappy with the company for a long time. He has complained the company owes him money - more than $3 million."
West's lawyers reportedly sent a letter to Tidal saying the company was in breach of contract because he never received a promised bonus for bringing in 1.5 million new subscribers with his album Saint Pablo and Tidal did not reimburse him for music videos.
Tidal fired back saying that West did not deliver the videos promised and he is still under contract so they will sue him if he signs with another streaming service.
West's feud with Tidal occurred before Jay-Z released his new album 4:44 last week, in which he hit out at the rapper on the track Kill Jay-Z and suggested he had loaned him a staggering US$20 million.
