Adagio Sample  Lesson Sample by Tomaso Albinoni. Intermediate Level. (Download) Albinoni was a Baroque era composer of primarily operas and yet his most famous piece is this simple and beautiful Adagio for the piano. This lesson includes a full demonstration of the song followed by a detailed "by ear" lesson describing every note and its fingering in two to four measure sections. When you learn a song by ear you learn it faster and you memorize it as you are learning it.