Watch Justin Bieber perform new hit song 'Peaches' with Jimmy Fallon using kids' toy instruments Justin Bieber’s latest song Peaches is the biggest hit in the country at the moment, and now it’s had a classroom instrument make-over. The Canadian superstar joined Jimmy Fallon and The Roots on The Tonight Show to perform a cuter than cute rendition of the chilled-out track featuring toys and children’s instruments you’d likely find at their school. We almost love this version as much as the original song! Taking to Instagram Jimmy thanks Justin for always being "down for something fun."