Summertime Song is the main antagonist in "This Is My Jam". It also appeared in "Exit 9B". In the episode "This Is My Jam", Mordecai and Rigby find an old cassette tape while cleaning out the gutters of the house titled "Summertime Loving, Loving in the Summer (Time)" by a fictional band named Solid Bold. Soon enough, they give the tape another listen for nostalgia's sake. Mordecai mentions he found the song cool for one summer in junior high. They soon shut it off, thinking it to be lame. Rigby begins to hum the song throughout the rest of the day. Mordecai is miffed by his behavior. After the song starts to possess Rigby, Mordecai becomes frightened. They go to Skips who tells them that just sleeping it off would the the trick. That night when Rigby began dreaming, Summertime Song (chara