Avicii Hospitalized, Cancels Miami Show

Avicii won't be hitting the stage tonight in Miami -- the superstar DJ has been
hospitalized ... TMZ has learned.

Avicii was supposed to do a show at Hyde Beach at the SLS Hotel in Miami Beach
... but less than an hour ago DJ Cassette told the crowd he was in a hospital.

It's unclear right now what's wrong with Avicii.

Stephan from Dada Life also had to fly back from Miami last minute to undergo
surgery. What is going on out there?