Henle has their own app and subscription, which is said to be pretty decent by some of my friends who subscribe. But its catalogue is basically within classical music, so not that much overlap with MuseScore, which has a large number of transcriptions of film/game/pop music.

For many pieces of film/game/pop music, you can't even find a place to buy the original sheet music. There might not be an original sheet music in the first place; let alone a fitting transcription for the instrument you are looking to play. What musescore.com offers, is largely built upon hobbyists' transcription efforts.

> is largely built upon hobbyists' transcription efforts.

Which is the same model as one of the other holdings of Muse Group, Ultimate Guitar. It has a wide database for user-created guitar tablatures for most popular songs. Starting from 10 or so years ago, the experience has deteriorated rapidly; they - push their "Pro" versions at the top of each search result, - overlay a bullshit video on the actual tablatures which is easily mistaken for a video tutorial for the song you are looking at, - user created GuitarPro tabs require an account to download, - there is an ever-present countdown until their 80% runs out, which resets every two days or so.

When I first heard of MuseScore and the fact that Tantacrul worked on it, I was quite excited about an open source notation app but I want nothing to do with it because of their parent company.

Tantacrul himself has questionable ethics at best. He posted a long video ripping on Dorico, got hired by MuseScore, and then stole many of the design elements he'd just been ranting about.

I subscribe to ultimate guitar. The "official" tabs are worth it. Even though I'm subscribed I get sales emails about their courses or something and I could not unsubscribe because whatever they use for newsletters is adblock blacklisted. So eventually I just marked it as spam, which means account related emails from them will also go to spam.

sheetmusicdirect.com has a fairly large catalog available for unlimited online access at $99/year.

Thanks, I'll check it out.

Right, Hal Leonard's digital outfit.

musicnotes.com has a subscription at this point. Not a "traditional" publisher in that way, but it's a huge player for PVG (piano, vocal, guitar) scores that isn't Hal Leonard.

I wouldn't mind subscriptions to copyright music, but I mostly play classical which means it hasn't been in copyright for hundreds of years (if the idea even existed when it was composed)