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

Conductor Simon Rattle, who has reportedly told the Berlin Philharmonic he will leave his post there in 2018. Thomas Rabsch/courtesy of the artist hide caption

itoggle caption Thomas Rabsch/courtesy of the artist