Beethoven Beethoven Audio will be available later today. Facebook Twitter Google+ Email July 2, 200412:00 AM ET In concert at the Scottsdale Center for the Arts, in Arizona, the Muir Quartet plays the String Qaurtet, Op. 18, No. 4, by Beethoven. Facebook Twitter Google+ Email We no longer support commenting on NPR.org stories, but you can find us every day on Facebook, Twitter, email, and many other platforms. Learn more or contact us.