Front ensemble is like a big group of people who play instruments, kind of like a band. But instead of playing instruments that you might see in a regular band, they play things like keyboards, marimbas, vibraphones, and drums. They usually sit or stand up at the front of the band, which is why they're called the front ensemble. They play music that's often really fancy and complicated, and they add an extra layer of cool sounds to the music that the rest of the band is playing.