Clive Davis: Death Threats Trigger Police Manhunt

Sony Music honcho Clive Davis is at the receiving end of some very serious death threats ... and they're so severe, cops are on the alert to track the suspect down.

Law enforcement sources tell us Jeffrey Choi left Davis a message in November saying, "... you're a piece of s*** ... I will f***ing kill you."

We're told it's not the first time Davis has been threatened by Choi. In 2011, Choi left messages with Sony Music claiming they made songs about him without permission. He demanded money and threatened violence. He was put on a psych hold but later released.

Cops say when they went to Choi's latest residence they learned he'd moved and when they got him on the phone, he refused to meet up without seeing Clive face-to-face.