Like the best all-star jams, a cover of the Beatles' "A Little Help from My Friends" belted out by members of Switchfoot, Underoath, Thrice, and Bayside on Sunday night at Orlando's House of Blues was clumsy, heartfelt, and ultimately quite special.

Call it Pop-Grass: Fiction Family is a new cross-genre collaboration between religious power-pop rock band Switchfoot's Jon Foreman and bluegrass-tinged acoustic act Nickel Creek's Sean Watkins.