You CAN sing along with every note from Beethoven's 3rd, 5th, 7th, 8th, and 9th symphonies, Archduke piano trio, all of his named piano sonatas, his late and middle string quartets, his 3rd, 4th, and 5th cello sonatas, his 5th and 9th violin sonatas, his violin concerto, and his 5th piano concerto, right Anon?

https://www.youtube.com/watch?v=icJE69LZ1KU