@PockSchool Tweet 17/12/2015 09:10 PM Tweet 17/12/2015 09:10 PM Posted by System Administrator on 17 Dec 2015 Modified by System Administrator on 13 Mar 2024 @PockSchool RT @TED_ED: Celebrate Beethoven's birthday by diving into the math behind his music: t.ted.com/bRBExHp