Christina has impressed the Rolling Stones after joining them in their rockumentary. The singer was invited by the legendary band to perform a song on their concert film “Shine A Light”, directed by Martin Scorsese. And the rock artists were left in awe by Christina’s voice. Ronnie Wood said, “Man has she got a fantastic voice. She was brilliant, amazing...like Aretha Franklin." Mick Jagger said, "We always have guests in our shows. You think 'Now who's going to fit in? Who's going to be able to do this duet and have a different appeal to the audience?'"It's always best to have people you know rather than the unknown, you want someone who'll turn up and deliver. But Christina was fantastic."