Aha have found these music notebooks I have mentioned some days ago. I'm not a musician, didn't test them, so I don't know if they are worthy.
Here the webpage with all the notebooks:
https://magenta.tensorflow.org/demos/colab/
And this one, that I think is some kind of merge of 3 notebooks from the same webpage, but is not listed on it:
https://colab.research.google.com/notebooks/magenta/hello_magenta/hello_magenta.ipynb
A big thank you for this ! I will check this. I overlooked these possibilities when i was learning colab with unique focus on natural langage.
I hope you have lots of fun with this stuff!