The Casio CTK-3000 is an affordable instrument with a 61 Key Piano Style Touch Sensitive Keyboard, 400 total onboard Tones, 150 Rhythms and Digital Effects. Packed with great features such as Casio's famous Step-up Lesson System, audio inputs for a MP3 player, USB port for MIDI implementation and a pitch wheel for additional expression over sounds. All this makes CTK-3000 more realistic and expressive than ever before at this price range.