@shadorne "Musical is a euphemistic term. It is a nice way of saying a speaker sounds nice even if it doesn’t sound realistic at all."
I believe the word you are defining or describing above would be "euphonic" rather than "musical". For me, at least, "musical" assumes accuracy as a prerequisite....it means an evenness to frequency response an openness of soundscape and a smoothness of texture (ex. hearing that a cymbal is being struck by a wood or plastic tipped drumstick and in the best circumstances, the metal overtones from a drum kit)
"euphonic" is not what most audiophiles desire. If I'm listening to hard rocking group, I want to hear all of the intended distortions that are part of that creative process, NOT a smoothed over version of that reality.