One of my longterm feelings about the nature of music therapy is that whatever music works for an individual is what's "best" for that individual. I cringe whenever someone flatly states one kind of music, or a particular performer, or a particular song, is better than another.
This article supports that idea:
. . . When we hear our favorite music, our thoughts tend to shift inward, activating the default mode network (DMN) a network of brain regions that's active when a person is awake but at rest. . . .
. . . .In an experiment they likened to “real-world music listening,” the researchers scanned the brains of 21 volunteers listening to three pieces of music: one from a preferred genre, one from a disliked genre and their favorite song. By peeling back the brain patterns affected by rhythm and lyrics, the researchers discovered that the DMN was activated when the volunteers listened to their preferred tunes -- and disengaged while listening to music from a disliked genre. Favorite music ranged from classical to country, with lyrics and without . . .
. . .“These findings may explain why comparable emotional and mental states can be experienced by people listening to music that differs as widely as Beethoven and Eminem,” the authors write. . .
Beauty is in the eye of the beholder and the ear of the listener.