get-audio-metadata.py is a python script to analyze a folder full of wav files and generate a CSV report containing various metadata including

Stream and file based music metadata parser for node. Supporting a wide range of audio and tag formats.

Browser version of music-metadata parser Supporting a wide range of audio and tag formats.

AudioTag Ruby library for reading and writing audio file metadata

A webapp that grabs Spotify's metadata for any track you'd like!

A flexible ontology for the interoperability of music metadata