The Unofficial PHP API Client for Pandora is an experimental code library that helps applications written PHP to easily access the Unofficial Pandora API. The library's dependencies include php_openssl and php_mcrypt.
The site claims a "huge collection of hit lyrics." Your next music application can tap into the database with the new ChartLyrics Lyric API. You can use it to search in several ways and, more importantly, obtain the text that makes up the words to popular songs.