Casio's CT-FS1 keyboard uses Feel Sync technology to ensure players never hit a wrong note by adapting to songs via a companion app. The app analyzes tracks and adjusts the keyboard's notes in real time, allowing users to play along with harmony.

The $400 keyboard features 61 touch-responsive keys, monochrome design, and Bluetooth connectivity. It runs on AA batteries or an AC adapter and includes a built-in stereo speaker with surround effect, available in black or white finishes.