Pink Floyd's Guest Vocalist: Stephen Hawking Physicist will make another cameo with band in upcoming album By John Johnson, Newser Staff Posted Oct 10, 2014 3:26 PM CDT 23 comments Comments British physicist Stephen Hawking in a 2010 file photo. (AP Photo/Evan Agostini) (Newser) – Physicist Stephen Hawking burnishes his pop-culture cred next month with the release of Pink Floyd's first album in two decades, reports Rolling Stone. The track "Talkin' Hawkin'" on the Endless River album will feature Hawking himself. Of course, as devoted fans of the group or of Hawking probably know, this isn't their first collaboration. Hawking appeared on the band's "Keep Talkin'" track of 1994. It's just the latest foray into the entertainment biz for Hawking, who has been on everything from the Simpsons to the Big Bang Theory to Star Trek: The Next Generation, notes NPR.