Choosing the best offline music player for Android can be a matter of personal preference, as it depends on your specific needs and features you prioritize. Here are some of the popular offline music player apps for Android:
Poweramp Music Player: Poweramp is known for its powerful features, including a customizable user interface, extensive equalizer settings, and support for a wide range of audio formats. It's a paid app but offers a free trial of best music player android offline.
BlackPlayer: BlackPlayer is a feature-rich music player with a sleek, dark-themed interface. It offers a range of customization options, including various themes and a customizable equalizer.