Casio CTK-2500 Portable Keyboard - Black Features MUSIC TO GO The CTK-2500 lets you make music anywhere with battery power, or use the included AC adapter. It's compact and lightweight, yet rugged and reliable. ALL ABOUT SOUND With 400 Tones and 150 Rhythms, the CTK-2500 delivers a huge variety of musical exploration. You can listen via the built-in speakers, or connect headphones for quiet playing. DANCE, DANCE, DANCE The CTK-2500's all-new Dance Music Mode lets you create and remix electronic dance music quickly and easily. Select from 50 styles of EDM, and use the lower keys to choose different variations of drum beats, bass lines, and synth parts. You can even add filter, flanger, gate, roll, low-fi, and other effects to spice your tracks up even more. LEARN YOUR FAVORITE SONGS Connect to your iOS or Android device to use the free Chordana Play app, which uses the CTK-2500’s display to show you how to play your favorite songs. Just download your favorite MIDI files, connect your device's headphone output to the CTK-2500's audio input, and explore an endless library of music. You can even transfer songs to the keyboard, and learn them when your device isn't connected (some file limitations apply).