Soprano Ailyn Perez and tenor Stephen Costello met in music school. Now married, the couple sings together around the world — as in Gounod's Romeo and Juliet at Opera Philadelphia in 2001. Kelly & Massa Photography/Opera Philadelphia hide caption

itoggle caption Kelly & Massa Photography/Opera Philadelphia

David Finckel is a longtime member of the Emerson String Quartet. Journeys: Tchaikovsky, Schoenberg is his last recording with the group. Christian Steiner/Courtesy of the artist hide caption

itoggle caption Christian Steiner/Courtesy of the artist

The Emerson Quartet play Beethoven at the Savannah Music Festival. From left: Philip Setzer, Eugene Drucker, David Finckel and Lawrence Dutton Frank Stewart /Savannah Music Festival hide caption

itoggle caption Frank Stewart /Savannah Music Festival