jfranzone

<a href="http://lyricwiki.org" title="Lyrics From LyricWiki" rel="nofollow ugc">LyricWiki</a> is a free site which is a source where 
anyone can go to get reliable lyrics for any song from any artist without being hammered by invasive ads.
This plugin provides a widget to place a search box right on the sidebar of your WordPress site so 
that your readers can utilize the LyricWiki site and find their favorite lyrics from your blog!
<h3>Configuration</h3>
<ol>
<li>
Title – As with most widgets you can provide a title to display above the LyricWiki Search
</li>
<li>
Button Text – You can configure the text of the search button if you like.
</li>
<li>
Hide Help – Check to hide the small link to help
</li>
</ol>

Lyric Wiki Search Widget

Adds a sidebar widget to search for song lyrics on the LyricWiki.org site.

lafraia

Vagalume Toolbar
Mantenha o seu usuário por mais tempo no seu site! Com o Vagalume Toolbar seu usuário não precisa sair do seu site para acessar todas as letras de músicas, clipes com legenda (embed de vídeos), ranking das músicas mais acessadas e muito mais!
Para saber mais acesse: http://www.vagalume.com.br/widgets/toolbar/

Vagalume Toolbar

Um pedaço do Vagalume dentro do seu site!

Lyric Wiki Search Widget vs Vagalume Toolbar