You know what it feels like when, no matter how hard you try to shake it, you can't get that song out of your head. Psychologists have a technical name for this phenomenon. They call it an "earworm," referring to those songs that "arrive without permission and refuse to leave when we tell them to." In the video above, the Danish design agency Benny Box has created a short animated film -- called Jazz that nobody asked for -- that serves as an "ode to all those unwanted songs out there, that have nowhere to go." The music taunting the main character is "Quaker City Jazz" (1937) by Jan Savitt and His Top Hatters Orchestra. If you've had your own earworm -- your own maddening soundtrack for this film -- let us know in the comments section below.