0xF2 - System Common, Song Pointer, with data1 and data2 being LSB and MSB respectively.

(Note: Only Real-Time messages may be interleaved with a System Exclusive.) This message also is used for extensions called Universal Exclusive Messages. System Exclusive is used to send data in bulk, such as patch parameters and other non MIDI spec data. code as its own, it will listen to the rest of the message, otherwise it will be ignored. Data1 is usually a seven-bit Manufacturer's I.D. This message makes up for all that MIDI doesn't support.

0xF0 - System Exclusive Start, with data1 being the manufacturer's ID and data2 the data itself.

The second character is part of the message type and does not represent a MIDI channel. Sensitivity is a function of the transmitter The pitch wheel is measured by a fourteen bit value. This message is sent to indicate a change in the pitch wheel. This is per channel - use this message to send the single greatest pressure value (of all the currently depressed keys). This message is usually sent by pressing down on the key after it has been pressed - but it is different from Polyphonic Key Pressure ( Aftertouch) which is per note. Controller numbers 120-127 are reserved as 'Channel Mode Messages'. Controllers include devices such as pedals and levers. This message is usually sent by pressing down on the key after it has been pressed.

0xAn - Polyphonic Key Pressure ( Aftertouch).

This message is sent when a note is started. This message is sent when a note is stopped.

For example, a Note On message will always contain a total of 3 bytes one Message Type byte, and two data bytes (Note Number and Velocity). The Message type also indicated the number of bytes in the midi message. For example, 0x90 means Note On, MIDI Channel Zero.

Two characters, the first is Message Type (listed below) and the second is MIDI Channel Number (0x0->0xF).

Midi note number to note