Song of the Year 2015: Watch Ally Brooke, DJ Khaled & More Make Their Picks

Which singer thought Adele's "Hello" was the best song of 2015? Who couldn't stop listening to Justin Bieber this year? Who loved The Weeknd's "Earned It"? In the video player above, check out artists including Fifth Harmony's Ally Brooke Hernandez, OMI, Mutemath, and DJ Khaled share which 2015 song became their personal favorite.