I find The Shaggs really fascinating both for their backstory and their music, I do find their music really charming in it's strangeness, the abusive childhood that led to it's creation not so much.
BTW their father didn't compose the songs, Dot did.
Here's an interview Rolling Stone did with Dot back in 2016 that's worth a read.
https://www.rollingstone.com/music/m...-album-115348/