Fans will see an exclusive question-and-answer session in the documentary.

Justin Timberlake has no regrets about agreeing to perform at the Eurovision Song Contest. Read more http://www.music-news.com/news/UK/100628/Justin-Timberlake-was-clueless-about-Eurovision-before-agreeing-to-perform

Kelly Clarkson has explained why she announced her second pregnancy on stage in August. Read more http://www.music-news.com/news/UK/93696/Kelly-Clarkson-opens-up-about-really-bad-pregnancy