Soprano Galina Vishnevskaya was once caleld the "Russian Maria Callas" for her intense interpretations. Capitol Records, Inc, courtesy of EMI Classics hide caption

Mstislav Rostropovich
From coffeehouses to punk clubs, Matt Haimovitz has played his cello in some surprising places. Steph Mackinnon hide caption
Know your rallentando from your accelerando? Opera singers must follow the composer's musical road signs. iStock hide caption
Zuill Bailey sneaked into a front row seat -- and got the concert of his young life. Courtesy of the artist hide caption
Dvorak: Cello Concerto, excerpt (Mstislav Rostropovich/Berlin Philharmonic)
An engraving of Franz Schubert, a year before he wrote his famed String Quintet in C. Getty / Hulton Archive hide caption