And I'm another who self hosts Joplin. My wife and I use it on our desktops and mobile devices. We specifically switched to it from One Note and it's been perfect for our use!
I used it extensively as I was writing (I'm an author) to make notes about things I needed to go back and correct, or an idea to incorporate, etc.
He says he "makes ear movies," and I'd say that's about the best description. His music is very cinematic but also expansive and diverse. Radio Galaxy in particular reminds me very favorably of Random access Memories in the way that it experiments with different genres a bit more than previous works.
I found Starcadian 8 years ago and I've listened to some of his music almost every day since. I keep finding new things.