“The Library of Congress planned to mark Ludwig van Beethoven’s 250th birthday with a series of concerts that offered a fresh look at Beethoven’s nine remarkable symphonies, performed by string quartets, piano duos and the U.S. Marine Band. While the pandemic has moved the concerts online, they can now be enjoyed from the comfort of your couch, with the benefit of extra programming. The series begins with the acclaimed Takács Quartet — featured at a sold-out in-person Kennedy Center concert in December — performing pieces by Beethoven, Schubert and Bartok. Visit the Library’s website for bonus content, including commentary from the musicians, curators and guests, and get a look at Beethoven-related items from the Library’s collection. 8 p.m. Free registration.”