Casio's $400 keyboard filters out wrong notes to help beginners

Casio has released a portable keyboard that prevents users from playing incorrect notes while practicing songs. The device, named the CT-FS1, costs $399.99 and is available immediately in black or white finishes.

The instrument relies on a proprietary system called Feel Sync to assist players. When a user loads a song file via a companion mobile application for iOS or Android, an algorithm analyzes the music. As the performer plays the 61 touch-responsive keys, the keyboard emits only the tones that fit the song's harmony. This function removes the need for the player to identify the correct pitch, leaving only the responsibility of matching the song's rhythm and timing.

The hardware stands at just under 10 pounds. It includes built-in stereo speakers, a physical headphone jack, and Bluetooth connectivity. Power can be supplied by AA batteries or an external adapter. The keys are monochromatic, matching the black or white casing of the unit.

The keyboard also functions as a standard electronic instrument without the assistance mode. Its length allows for a split-keyboard setup, which creates two distinct zones. One side can operate traditionally for an experienced musician, while the other side applies the real-time Feel Sync corrections for a less experienced player.

Casio introduced this model to its Casiotone line of portable electronic keyboards. The company states the feature is designed to help aspiring musicians master skills like rhythm and timing without the frustration of hitting wrong notes.