Madonna and nightclubs focus groups

I miss this august news: Madonna uses secret nightclub 'focus groups' to pick songs for new album:

now it seems that even Madonna has woken up to the power of focus groups. The most successful female artist in chart history has chosen songs for her next album after secretly trying them out on nightclubbers.

The tunes, with her distinctive vocals removed, were played in clubs from Liverpool to Ibiza throughout June. The reaction of the crowds were filmed and used by the 47-year-old mother of two to determine the final track listing for Confessions On A Dancefloor, her 10th studio album. (...) Claire Beale, the editor of Campaign magazine, said the research could be seen as a crisis of confidence for someone normally known for their business acume

OK what's next? Cognitive anthropology of J-Lo girly fans at birthday parties?