I just sketched this now. This is an ALTERNATIVE music composition method. i don’t know what it’s called, but I learned it in piano lessons as a kid. Basically, you can interpret these scribbles in whatever way you feel like. it’s more about the ”envelope” or the negative space or the ”space” the music takes up. I don’t knwo how to describe it. I haven’t used it in 20 yaers, but I’d love to know the name of this style. I think ppl use it in jazz.