Of those 13 hits, four were written by an individual bandmember: Vertical Horizon's Matthew Scannell ("Everything You Want"), Matchbox Twenty's Rob Thomas ("Bent"), Outkast's André "3000" Benjamin ("Hey Ya!") and Tom Higgenson of the Plain White T's ("Hey There Delilah"). And two songs were written entirely by the guest artist, as will.i.am received the sole writing credit on "OMG" by Usher in 2010 and Calvin Harris wrote "We Found Love" by Rihanna in 2011.
(See the full list of Hot 100 No. 1s written by a single songwriter below.)