Now everyone knows about Banshee. It was one of the most popular Linux music players of its time. And it was even Ubuntu’s default music player for a while. But due to Mono and GTK2 addictions, it was not able to survive and unfortunately there was no new version after Banshee 2.6. But if we, the GNOME community, rewrite Banshee with GTK3 and.NET, Banshee might be back! So we can bring the Banshee back by rewriting it.
You can fork the app and start modernising it. The app is FOSS
If you want to modernise Banshee, I would recommend skipping GTK3 and port to GTK4 and libadwaita.
If you want to use the Banshee name, you should contact the latest maintainers.