A cello teacher provides instruction to students learning how to play the cello. Your specific job duties depend on where you work. Many cello teachers offer private lessons at music studios or even out of their homes. Lessons usually last between thirty minutes to an hour, depending on the skill set of the student. Or you may work at a community center or with a youth organization to provide group lessons to students after school or on weekends. Group lessons are usually less expensive, but student progression is often slower than with private lessons. Some cello teachers may teach other instruments, such as violin, and collaborate with other instructors to prepare students to play in an orchestra.