Beethoven played mostly piano, organ and violin; whilst it is not as well known, he also played the viola. He also dabbled with other keyboard instruments like harpsichord and clavier.hether or not he was actually born on that day is unknown. Beethoven was baptised on 17 December 1770. I … t was the custom of the time to baptise children the day after they were born, and only his official baptism records exist. thus it is assumed he was born on 16 December 1770.