Dear Giovanni,Alper Mufetti is a wonderful musician with great technique. He's very young with a great carrier. It was no a critic but an observation. I'm not able to sing with a doublebass, I know. The strange thing is that I teach at 200 meters far from Paisiello house of birth. It's incredible! Your critic is right.I'll try to do better.Thanks a lot, Giovanni.My best regardsVito