Welcome to the world of auto-tune. Lady Gaga (Stefani Germanotta) wrote "Telephone" (Lady Gaga - LaShawn Daniels - Rodney Jerkins) for Britney Spears and the LP "Circus". This is Britney's 2008 demo of the song that was leaked in 2010 and for an unknown reason just wasn't used for the project.

The album "The Fame Monster" includes Beyonce (Knowles) with Lady Gaga on the 2010 hit duet version of "Telephone" (Lady Gaga - LaShawn Daniels - Rodney Jerkins - Lazonate Franklin - Beyonce). The tune reached number three on Billboard while sitting atop the Dance chart. The video for "Telephone" got Lady Gaga the Guinness World Record for most product placements in a video!