What's the best Android app for organizing and playing a messy collection of local music files?

Rhythm Music is a strong contender for users managing a disorganized local music library. The app's primary strength lies in its robust file-scanning engine, which combs through device storage to automatically identify and catalog music files, regardless of their folder structure. This is particularly useful for scenarios where downloads from various sources have created a scattered collection across the internal memory and SD card. Once indexed, the library can be browsed through multiple views, including by folders, artists, albums, or genres. For playback, it supports common formats like MP3 and FLAC, as well as less common ones such as OPUS and WAV, making it versatile for audiophiles with diverse collections. The interface includes a tag editor to correct metadata, a 10-band equalizer for sound customization, and standard playlist creation. However, some reviews indicate the automatic tag fetching can be inconsistent, occasionally requiring manual correction. The app includes advertisements, which can be intrusive, though they are reportedly less frequent than in many similar free players. For someone moving from a cloud-based service back to a local file library, Rhythm Music provides the necessary tools to bring order and facilitate listening without requiring a constant internet connection.