Therefore, as an easy reference, I am posting here the codes as used in Logic Studio 9. play MIDI pitch 36 (C2) for the bass drum (bottom note) and 60 (C4) for the. It becomes a problem when you work in a complex project where sounds have not been defined for all 10 octaves and you hit a note and hear nothingā¦ Yep, this is what happened to me. You can view the percussion MIDI value (MIDI note number) for any percussion. Tenor C is an organ builder s term for small C or C3 (130.813 Hz), the note one octave below Middle C. This is usually not a problem as all most MIDI devices can usually be transposed up or down easily. The term Low C is sometimes used in vocal music to refer to C2 because this is considered the divide between true basses and bass-baritones: a basso can sing this note easily, whereas other male voices, including bass-baritones, typically cannot. This means that MIDI note number 0 is C-2 and that the highest note possible is G8 (using MIDI note number 127). In the case of Logic Studio, middle C is C3. It turns out that various manufacturers place this middle C at different octaves. However, the specifications does not say which one is middle C. Therefore, MIDI note number 69, used for 440Hz tuning, should be the A above middle C (supposing an equal temperament tuning). The most common is the one below where MIDDLE C (note 60 3C) is C3 (C in the 3rd octave). All other notes are relative to this one. Computer Music: MIDI Key Number Chart There are TWO conventions for numbering keys (notes) in MIDI. The basic format of the MIDI note-on message is shown below: Most-significant Nibble. The note-on message is a channel message and is consequently restricted to one of 16 pre-defined MIDI channels (i.e., numbers 0 through 15). The MIDI specification, maintained by the MIDI Manufacturers Association, tells us that middle C is MIDI note number 60. The MIDI note-on message is used for turning on MIDI notes. However, knowing which note is which is not always straightforward. This means there are 128 notes (2 7) that can be assigned in MIDI. The MIDI numbering scheme uses 7 bits to identify all the notes. MIDIĀ note numbers are the unique numbers assigned to each note in the MIDI system.