This document provides all the information you need to be able to control the Launchkey.
The Launchkey communicates using MIDI over USB and DIN. This document describes the MIDI implementation for the device, the MIDI events coming from it, and how the Launchkey’s various features can be accessed through MIDI messages.
We express MIDI data in this guide in a few ways:
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A plain English description of the message.
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When we describe a musical note, middle C is deemed to be ‘C3’ or note 60. MIDI channel 1 is the lowest-numbered MIDI channel: channels range from 1 to 16.
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MIDI messages are also expressed in plain data, with decimal and hexadecimal equivalents. The hexadecimal number will always be followed by an ‘h’ and the decimal equivalent given in brackets. For example, a note on message on channel 1 is signified by the status byte 90h (144).