20 Things You Didn’t Know About Andy Grammer (page 6)
6. I asked Andy if he could walk into a studio with any female artist to do a duet with or collaborate with, who would it be? His answer, the great [lastfm link_type="artist_info"]Lauryn Hill[/lastfm].
But this is pretty cool too, Andy was in Nashville and [lastfm link_type="artist_info"]Taylor Swift[/lastfm] was performing. She invited Andy to come to the show and sing Keep Your Head Up and they did an awesome duet!