Isolated Instruments Dataset For Source Separation?

Dataset recommendation request:

I’m looking for any existing publicly available datasets with many examples of isolated instruments being played with no accompaniment and minimal ambient noise.

I need isolated instruments to train individual instrument source separation and detection models for [bar,ts,as,ss,tp,cl,dm,b,etc., etc.] – basically all of the most commonly found instruments in jazz sessions with the exception of piano (which I have no problem sourcing isolating recordings of).

I can probably source sufficient material from Youtube, but and hoping there are some new datasets I haven’t heard of yet with isolated instruments.