Jealousy Issues? (need your honest opinions)

Me (female, 19) and my bf (19) have been together for over 2 years and we have trustful relationship with open communication and quite the maturity for our age. My bf is really into art & music and creates music himself. Today we were hanging out outside together and two girls passed by us (around our age or younger) and one of them randomly sang. Her voice was pretty and my bf liked it. After we passed by them, my boyfriend asked me what I would think in a situation if he went up to her, complimented her, and asked if he could for example sample her. I said, it would make me feel uncomfortable, yet I dont know if it reasonable or unreasonable to feel insecure about it and whether it is wrong to think that way or even if my bf is in the wrong(which I doubt?). Please tell me your opinions, I need another perspectives. Am I even a bad girlfriend for this?

Extra info, I feel uncomfy by the idea that in theory, if he would do it, it wouldnt be on a professional “level” but rather on a casual one. Because my bf is yet a boy with a dream that he wants to fullfill. He doesnt have a team or a studio, which probably would mean that in this scenario they would need to either go to his place or meet up somewhere for this to happen and Im extremly uncomfy with this idea. If he would have a studio and be already a “fullfledged” musician, I wouldnt mind him asking randoms he seems fit to develop his art.

TL;DR:My bf considered to talk to a random girl and sample her voice which makes me uncomfy. Is it reasonable for me to feel that way or is it unhealthy jealousy; need your opinions. (this summary isnt good sorry:,)