Headcat, the bluesy rockabilly band that featured the late Lemmy Kilmister (Motörhead) along with Slim Jim Phantom (The Stray Cats) and Danny B. Harvey (Lonesome Spurs, The Rockats), will be releasing a Buddy Holly tribute album, titled “Headcat Plays Buddy Holly,” on May 15. The effort will be available on CD and red/yellow split colored…