Hi, appreciate the note! I'm Julian, I do all the design at Melty. I try to design our software to be functional, visually subtle, and chromatically warm. I don't know that the aesthetic has a name, but I've spent a lot of time studying manuscripts from the early middle ages so that might have seeped in - the logo for Conductor is actually a variant of insular majuscule (you can see the ductus in the animation)