The simple plug and play system is powered by patented state-of-the-art professional live vocal effects technology…No need to pay for music content since it was designed to work with the thousands of FREE YouTube® Karaoke videos available online Works with your existing mp3 music, apps and more Voice-cancellation option creates karaoke tracks on-the-fly from standard songs The entire Singtrix® system including Studio Effects Console, Mic and 2.1 Speaker are specifically tuned and designed to provide studio quality sound, making singing experience exciting, fun and transformative For all skill levels from beginner to pro Works with instruments in place of karaoke tracks, tuning your voice to chords played on your guitar or keyboard…The natural tuning effects act like training wheels for your voice and can help improve your singing Reduces vocal fatigue and strain, making singing effortless for longer practice sessions