Combine the 25-key lighted keyboard from ION with your iPhone, iPod touch, or iPad, and you’re on your way to learning to play piano. You use the free teaching app in iTunes with the Piano Apprentice keyboard, and you follow along with the lights on the keys as they guide you to learning to play the music. The iOS screen will display the sheet music or you can watch a pair of hands as they play to guide you. The Piano Apprentice keyboard runs on batteries or with the optional AC adapter. Amazon has the keyboard for $99.99, a $50 savings from the list price.