The fifth summer of this decade isn't over yet. But in the past few years, we've seen summer jams that will surely define the era for future generations, from indelible one hit wonders such as Gotye to the ongoing hit parade of super producers Dr. Luke and Pharrell Williams. We've even declared some early victors from the summer of 2014, including Magic! and Iggy Azalea. This list was assembled using Billboard data from Hot 100 charts between June 20th and this week, dictated by peak chart positions and total length of run on the Hot 100. To boil the list down to the most seasonally appropriate summer anthems, we omitted melancholy rap power ballads (Eminem, B.o.B., Lil Wayne) and bummery pop songs (Maroon 5, Adele, Sam Smith, John Legend).