The name of the 24-year-old suspect has not been released.
The victim was a 33-year-old man but few other details are known. His body was found around 11:30 last night at 2nd Street and Washington Avenue.
The Belle of the Night operated as the Belle Angeline on Laclede’s Landing in the 1970s and `80s, but now appears at the end of its rope.
Police say the cutting happened just before 3 a.m. Saturday outside Heartbreakers.
The music recording school will be on Laclede’s Landing.