During that show, which featured Neil Young and Ramones covers in addition to a few duets with Glen Hansard, Consequence of Sound reports, Vedder debuted a brand new song - which, to add to its intrigue, has no name.

"I'll play this song, then I'll go learn it," the frontman quips before breaking into the all-acoustic number, which fans are dubbing "I Won't Hold On."

Though the bumps in the road are obvious - it's a new tune, after all - the song certainly shows promise as a tender ballad, featuring expressive Vedder vocals posed against simple, steady acoustic guitar.