Generate a context and a hypothesis.
Context: Carmen: Duets & Arias is an album released in 2010 by Italian tenor, Andrea Bocelli. The album is a collection of arias of Georges Bizet's opera "Carmen", including duets with Welsh bass-baritone, Bryn Terfel, Russian mezzo-soprano Marina Domashenko, and Italian soprano Eva Mei, from the French opéra comique.

Hypothesis: Andrea Bocelli only sings solo