Yes, a person who really understands can not only hear every melody, but also hear the accompaniment of several musical instruments and chords. For example, ordinary people can hear everything in the vast sea and sky, which is me today Watching the snow drifting by on a cold night, people who have passed sight-singing and ear training will hear 32112355565. This is a simplified notation. If you listen to it again, you can hear the bass, guitar, and keyboard. If you can't hear it, you can use music theory to deduce it. This is The basic qualities of a professional musician