Convert any MIDI file so your Casio keyboard lights up the correct keys for left and right hand practice.
Configure your Casio keyboard to respond to the converted MIDI channels:
This converter works with any Casio keyboard that has the Key Lighting or MIDI In Navigate feature. This includes all models in the LK (Lighted Keys) series and select CT-X models:
If your Casio keyboard has lighted keys and a MIDI In Navigate setting, it is compatible.
Key Lighting is a Casio feature where the keyboard physically illuminates the keys you need to press. "MIDI In Navigate" allows external MIDI data (from a file or computer) to control which keys light up. The keyboard expects left-hand notes on MIDI channel 3 and right-hand notes on channel 4.
Standard MIDI files use arbitrary channel assignments. Casio's lighting system requires notes to be on specific channels (3 for left hand, 4 for right hand). This converter reorganizes the channels and intelligently splits notes between the hands.
The split point is the MIDI note number that divides left and right hand. Notes below this value go to the left hand (channel 3), and notes at or above go to the right hand (channel 4). Auto-detect finds a natural gap in the note distribution. Middle C (60) is the default fallback.
Yes, this tool is completely free. Uploaded files are temporarily stored for processing and automatically deleted after 7 days. We do not share or analyze your MIDI files beyond conversion.
Many websites offer free MIDI files — search for "free piano MIDI files" or try Mutopia Project, MuseScore, or piano-midi.de.