For music, the four bands map naturally onto what listeners actually notice: bass weight, vocal/instrument body, presence, and sparkle.
There's no universal "correct" music EQ — a warm, bass-forward curve suits some genres, a bright, mid-forward curve suits others. Start from Flat, make one small adjustment at a time, and compare against the unprocessed sound using the Bypass switch.
A well-mastered modern track usually needs only small tweaks, while an older or poorly-mixed recording can benefit from more significant EQ moves. Listen to the unprocessed track first so you know whether you're fine-tuning or genuinely fixing something.