Catchy songs get stuck in your head

Music can be a wonderful thing. The right song can instantly put you in a pleasant mood and serve as an uplifting spark, if even just for a brief moment. Sometimes, however, you'll come across a song on the radio and even when it's over, it sticks with you long after the last note is played. Like a broken record scratching the same chords over and over again, catchy songs -- good or bad -- can stick with you like a painful tick.