Police arrested a 32-year-old man on suspicion of supplying drugs.
An autopsy turned out to be inconclusive so authorities are awaiting toxicology reports.
Jason Rae and Corinne Bailey married in 2001.
The 31-year old husband of Grammy-winning British singer Corinne Bailey Rae is dead.The body of saxophonist Jason Rae was discovered in a flat in the northern British city of Leeds on Saturday.