A cute retro app for accessing music on a 'phone, "My Classic" (iPhone only as far as I know). It gives you a customisable iPod layout, with options such as Cover Flow that aren't on the regular music app these days. It's a paid app, but only a subscription if you want the "pro" version.
More details here, including the "cheat code" needed to turn the default Game Boy view into the rather more useful iPod one:
https://www.pocket-lint.com/turn-your-iphone-into-ipod-classic-app/
