The AP-470's rich, powerful speaker system is housed in an elegant cabinet available in your choice of finishes, and is designed to compliment any space. The lid can be raised or lowered to adjust the tone the same way you would on an acoustic piano, and a sliding key cover protects the instrument when not in use. The class-compliant USB port offers instant, no-hassle connectivity to Mac, PC, iOS and Android devices. Download the free Chordana Piano companion, which lets you customize your AP-470's functions right from your phone or tablet. You can also view PDF scores and interact with MIDI files, learning to play your favorite songs with vertical piano roll view and scoring system. The free Chordana Play for Piano app, available for iOS and Android devices, gives you complete control over every function in your piano. It also displays PDF scores, lets you play downloadable MIDI songs using your piano's internal sounds and speaker system, and learn to play MIDI songs with an interactive scoring system.The free Chordana Play for Piano app, available for iOS and Android devices, gives you complete control over every function in your piano. It also displays PDF scores, lets you play downloadable MIDI songs using your piano's internal sounds and speaker system, and learn to play MIDI songs with an interactive scoring system. The free Chordana Play for Piano app, available for iOS and Android devices, gives you complete control over every function in your piano. It also displays PDF scores, lets you play downloadable MIDI songs using your piano's internal sounds and speaker system, and learn to play MIDI songs with an interactive scoring system.