However , Joseph Haydn still gets credit for writing the timpani part at actual pitch with an F major key signature ( instead of transposing with a C major key signature ) , something that made things easier and made more sense . Though Joseph still gets credit for writing the timpani part at actual pitch with an F major key signature ( instead of transposing with a C major key signature ) , a procedure that made sense since he limited that instrument to the tonic and dominant pitches .