"Tan Feliz" (English: So Happy) is a song by American artist Pee Wee. The first version of the song was released on September 6, 2009 as a second promotional single from his debut studio album Yo Soy. The song was covered by Pee Wee featuring Brazilian pop singer Kelly Key from his second studio album, Déjate Querer, in February 4, 2011.
On February 25, 2010 Kelly announced the negotiations with Pee Wee's agents for a featuring in her album. On April 13, the singer said on Twitter that she would record the song. On September 9, Kelly said he would embark for Mexico to record the song, a new version of Tan Feliz. The song will be released on January, 2011.