Abstract syntax for standard MIDI files

• F = File

• FH = File Header

• T = Track

• TH = Track Header

• TT = Track Trailer

• S = Timestamp

• C = MIDI event

• N = number of tracks

• F = format (0, 1 or 2)

• R = resolution (subdivison of quarter)

• FL = length of the file in bytes

• TL = length of track in bytes

• TN = track number

• M = MIDI event

• X = meta-event

• F ::= FH { T }1

• T ::= TH { S C } 0 TT

• FH ::= FL N F D

• TH ::= TL TN

• C ::= M | X

• M ::= NoteOn | NoteOff | ProgramChange | Controller | PitchBend | Pressure

• X ::= Tempo | KeySignature | TimeSignature | Text | SystemExclusive | Marker | TimeCode

• S ::= a number of ticks since the last event (see R)

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