Italian singer Andrea Bocelli is a superstar. The Grammy- and Emmy-nominated tenor is one of the highest-selling vocalists in music. In 1999, Bocelli scored a Guinness World Record for simultaneously holding the No. 1, 2 and 3 spots on Billboard's Classical Top 10 chart. Since then, Bocelli has collaborated with everyone from Celine Dion to Ariana Grande. But on his latest album, Sì, Bocelli tries something he finds really daunting — recording with his 21-year-old son, Matteo.

"For me it has been a terrible experience because I felt all the responsibility, you know," Andrea says. "I am very worried because I know every kind of difficulties, every problem." Father and son sing a duet on the song "Fall On Me." Though Matteo is still a student at the Conservatory of Lucca in Tuscany, Italy, this new song marks the beginning of his professional singing career. But the son isn't worried about the reputation that precedes him or his famous father.