Joaquin Phoenix's continued efforts to reinvent himself as a rapper took another crazy turn last night in Miami and it was all captured on tape!!!

A big crowd started lining up around 10 p.m. for Joaquin's melt down performance at LIV in the Fountainebleau hotel.

The concert was scheduled to start at 11p.m, but it was nearly 3 hours later before Joaquin finally stumbled on stage. He was disheveled and wore a black suit with sneakers and sunglasses that appeared to have been broken then taped back together.

Most of his "lyrics" were completely unintelligible. After singing the first song, a guy in the crowd started heckling Phoenix. Phoenix immediately stopped rapping and told the crowd, "We have a (double-expletive) in the audience.”

Phoenix and the man exchanged expletive-filled barbs for nearly 20 seconds. Phoenix then dropped his microphone on the floor and jumped off stage. The two wrestled around before security grabbed Joaquin and hauled him backstage, ending the show just minutes after it began.

So what do you think? Is this just another act in his "art piece?" Or has Joaquin really gone off the deep end?