This music lesson includes 3 different ostinato patterns that accompany the song "Hot Chocolate" from the Polar Express. My students always love this song, and adding rhythmic parts to accompany it is even more fun! Split your class up into 3 groups and have each group in charge of one ostinato pattern. Re and Sol boomwhackers can be used and are color coded on the slides, in addition to one non pitched percussion instrument. Rhythm patterns include quarter notes, quarter rests, and eighth notes.