I went into the offline mobile music player rabbit hole recently too. I tried like a dozen and personally I think none of them are sufficient, including Symphony.
The most important functionality for me is queuing e.g. how it works and how easy it is to use and it’s just a horrible experience for virtually every player. So disappointing 😣
Haven’t seen these mentioned yet:
This is one of the newer shows made by Shinichiro Watanabe (Cowboy Bebop, Samurai Champloo). Follows the crew of a small terrorist organization as they implement their various plots - lots of intrigue that makes you want to keep watching.
Follows a boxer’s journey in a semi-dystopian future. Very mature and themes of adulthood, especially season 2. And I mean real life mature, not gore and titties. I’ve never watched an anime that I found so relatable as an adult human being. Music is also extremely top tier and I’m personally a huge fan of it’s animation style.
Phonograph commits the same sin as every other player in that swipe changes tabs and is therefore a total waste of a premium gesture.