the final song for the album, "Mr. Know It All", on February 25, 2011. Clarkson also revealed that she recorded two duet songs for the album, saying "There are actually two duets on the new record and I have at some point sang with both of these artists before but not on record." One of the duets, titled "One More Yesterday", which Clarkson confirmed was featuring fellow Idol-alumnus Chris Daughtry, did not manage to make the final track list. The song was written by Daughtry, Richard Marx and Jason Wade, but Clarkson decided not to include it feeling that it might not be suitable for the album's direction. The second duet, "The Sun Will Rise", which appears on the deluxe edition of the album, was revealed to be a duet with American songwriter Kara DioGuardi. The Smoakstack Sessions, Clarkson debuted extended play, was released as a companion EP to the record, and was made available exclusively through her official online music store. Title and concept Clarkson revealed that the album's title would be Stronger. She described it as "very much about strength and empowerment, so Stronger felt like the perfect title. Plus that song is just a gold mine — it's a little bit pop, a little bit pop-rock, a little bit urban, a little bit dance, and it ties everything in. And everybody loves that message, 'What doesn't kill you makes you stronger.' It's a perfect representation of my life." During Clarkson's live web cast on August 30, 2011 she stated what made her title the album Stronger was "mainly because the entire album is very much about empowerment and just strength overall and I love singing songs like that... That was kind of the theme -strength- so we named it Stronger." She also named it Stronger because it comes from a lyric from one of her favorite tracks on the album, initially called "What Doesn't Kill You (Stronger)". "It just kind of encompasses the whole theme for the album", Clarkson commented. Composition Music and themes Clarkson co-wrote seven tracks from the album, and collaborated with other artists such as Ester Dean and Bonnie McKee for the first time. Clarkson stated that the new music will be different from her previous albums, describing it as "like Garbage-meets-pop-meets-Muse." Claude Kelly remarked that the songs he wrote "were in true Kelly Clarkson form; singer records that showcase her voice, but also