When I first heard the track "Sing" off her newest work Songs Of Mass Destruction I thought I thought I was going mad as I thought I heard some familiar peeps um DUH ! thats the case !Madonna features as part of a chorus of female singers on the track "Sing," which also includes Sarah McLachlan, Dido, Celine Dion, Faith Hill, Shakira, Bonnie Raitt, Gladys Knight, Pink, Fergie, Melissa Etheridge, and KT Tunstall.Just thought I'd let ya know