Chris Brown FAIL!!

Last Night Chris Brown was FINALLY ALLOWED to give his Michael Jackson tribute. You know .. . the one he was supposed to give LAST YEAR - but Jay Z SHUT HIM DOWN!!!

Well, Chris Brown is now SIGNED ON with Joe and Jermaine Jackson (they'll be promoting his upcoming tour) - and they in turn, pulled strings at BET to allow Chris to give his TRIBUTE.

This performance was supposed to be a performance of a LIFETIME . . . and Chris BLEW IT!!!

It started off GREAT, with Chris doing a very CONVINCING Michael Jackson impersonation. But when it came time to show whether he had the VOCAL CHOPS . . . he broke down and started CRYING like a little girl.

Last night - would have been a HUGE opportunity for Chris to show the world that he was a superstar . . . and it FLOPPED. We doubt anyone's ever gonna give Chris that kind of an opportunity again.

OH WELL . . . . look on the BRIGHT SIDE. Breezy can always get a gig in VEGAS. We hear they're always looking for MJ IMPERSONATORS THERE!!!!

Check out the video though - the dancing is IMPRESSIVE: