In its latest issue, French magazine Paris Match publishes an interview with French DJ Bob Sinclar who is asked about being Madonna's opening act for the two 'Sticky & Sweet Tour' dates at The Stade de France in Paris next month:

"She called to ask me to support her on two dates. I worked on one of the singles produced by Timbaland and Justin Timberlake from her latest album. When her publicist asked me 'Are you available?', I didn't hesitate. And I'm doing it for free, I still can do things out of passion. Nowadays I'm free to do what I want as I live on my music. It's a luxury. But what I'm the most proud of is that I've never had to do music for the sole purpose of getting radio airplay."

Source: Paris Match (found on MadonnaTribe)