(Please note: this is not the fault of the developer who created this application, but is a restriction imposed by the music publishers themselves.)"
And from the LyricWiki page itself: "Unfortunately, licensing agreements with the biggest publishers in the music industry require us to no longer offer the ability for programmatic access to LyricWiki's collection of lyrics.
We tried to arrange some way to let API Developers license through us, but this was not possible.
While this is not something we are happy about, it is a necessity in order to finally secure licensing for LyricWiki from the major publishers which will allow the project to survive indefinitely.
For more info, please see the letter to API Developers""