Post Malone got emotional remembering Oliver Tree ... dedicating his concert to the late musician after a fatal helicopter crash ... and pouring out some beer for a fallen friend. ...

Jon Bon Jovi is finally ready to rock again -- revealing to PEOPLE he's fully recovered four years after undergoing vocal cord surgery and calling the whole experience a ...

Oliver Tree's girlfriend is speaking out for the first time since he died in a helicopter crash in Brazil ... and she says folks need to shut up about "any other women that ...