Installation
If in your machine previously you have never installed PyAudio then do this:
Unix
sudo apt-get install libasound-dev portaudio19-dev libportaudio2 libportaudiocpp0
Windows
Download the binaries from here
Now do this
pip install PyAudio‑0.2.11‑cp39‑cp39m‑win_amd64.whl
Then(both)
python3 -m pip install PyMusic-Instrument