Id3 Tag Correction and Downloading is a PHP class that can be used to correct tags of MP3 tags of music with records stored in a MySQL database. It scans a MySQL database table with information about music albums to see which albums do not yet have the associated ID3 tags. The class accesses the Web services APIs of sites like audioscrobbler.com, last.fm, lyricwiki.org, and lyricsfly.com to correct the pending music tags and get other details about the stored music.
Guzzle is a RESTful Web service client framework that enables PHP developers to quickly build testable Web service clients utilizing HTTP/1.1 best practices. It gives you access to advanced features like persistent HTTP connections, parallel requests, exponential backoff, over the wire logging, MD5 validation, cookie jars, and a caching forward proxy.