Try various definitions of music and I think they are fairly consistent
the Oxford English Reference Dictionary seems to b typical of the ones on our shelves where it gives the first definition as "The are of combining or instrumental sounds (or both) to produce, beauty of form, harmony and expression of emotion
The second - the sound produced
Three and four refer to compositions written and printed
The fifth - certain pleasant sounds, eg - birdsong or a stream
In Scotland, port-a-buel translates literally as "mouth music"
Wide enough to include the voice as a musical instrument as far as I'm concerned.
Jim Carroll