The LC3 music lab system effectively allows an instructor ubiquitous control over classes expandable to as many as 48 students. Using a system of headphones/mics, it's as if each student is isolated in their own virtual practice room, ideal for private practice or one-on-one instruction with a teacher. But with the touch of a button the practice room walls are instantly removed for group study, teacher-only broadcasts, or "all-together-now" ensemble performances Instructors even have a powerful MUTE button disabling the students' instruments when it's time to pay attention. Any instrument with a stereo headphone output can be taught using the LC3 including Yamaha keyboards, digital pianos, Silent Series brass and string instruments, or electronic percussion. Exclusive features like the heavy duty Yamaha CM500 headset-microphones and the Mega Group quick configuration button set the LC3 apart from its contemporaries.