A tempo is commonly expressed in two notations
'beats per minute' (which requires definition of the size of a beat)
'microseconds per quarter note' (which does not)
This class handles the conversions between the two.
Tempo() -
Constructor for class dguitar.adaptors.song.Tempo
Eleventh: byte
Tonality of the eleventh:
0: perfect ("juste")
1: augmented
2: diminished
this tonality is valid only if the value "Nine, Eleven or Thirteen" is 13.
Ninth: byte
Tonality of the ninth:
0: perfect ("juste")
1: augmented
2: diminished
this tonality is valid only if the value "Nine, Eleven or Thirteen" is 11 or 13.