Watch Billy Joel and Boyz II Men do “The Longest Time” at Citizens’ Bank Park on Saturday

In more Saturday night concert awesomeness, piano man Billy Joel brought his summer stadium tour to Citizens Bank Park, and brought out harmonizing hometown guys Boyz II Men to sing backup on his doo-wop inspired hit “The Longest Time” from 1983’s An Innocent Man.

These guys of course can rock the a cappella harmonies like nobody’s business – you remember this song, right? – so it was pretty much the perfect collaboration. Check out a video below, and for more, read our review of Boyz II Men’s June show at The Tower here.