An IPA file is a package file used to distribute iOS apps, including Apple Music, outside of the App Store. IPA files can be installed on an iOS device using various methods, such as through Xcode, Cydia Impactor, or other third-party tools.
This is a grey area. Under the Digital Millennium Copyright Act (DMCA) and similar laws worldwide, is illegal. Apple Music's subscription model is a form of DRM. Installing a modded IPA to access it for free is a clear violation of Apple's terms of service and potentially a violation of copyright law.
Sideloading specific versions on non-jailbroken devices via tools like AltStore or Sidestore. Installing modified versions that alter the user interface. How to Find and Track IPA Updates
To install a custom or updated Apple Music IPA outside of the official App Store, users rely on specific sideloading tools and methods. Third-Party Installation Tools
TrollStore will permanently sign the app with root registration, allowing it to update over your existing installation without revoking. Method 2: AltStore or Sideloadly (No Jailbreak Required)