LOS ANGELES (Reuters) – Music’s biggest names gathered to celebrate the trailblazers and veterans of their industry at music producer Clive Davis’s annual pre-Grammy party, remembering Whitney Houston and honoring the work of Epic Records’ L.A. Reid. Last year’s pre-Grammy festivities was marred by the sudden death of Houston in a bathtub at the same hotel a few hours before Davis’ party. Dubbed the hottest ticket in town on the eve of Sunday’s Grammy awards, Davis’ party attracted celebrities such as Johnny Depp, Sting, Katy Perry, John Mayer, Miley Cyrus, Joni Mitchell, P. …