"Whatever people’s perceptions are of whatever Rihanna is, it’s definitely a different animal live - completely different. At first, even when I went to work with her, I was, like, 'Can she really sing?' A lot of times with the singers you hear now, there’s a lot of that Auto-Tune element and you don’t know who can really sing. But when I went to rehearsal, I could not believe how well she sang, and I could not believe how well she sings live." Extreme rocker Nuno Bettencourt on performing as Rihanna's touring guitarist.