English to Chinese Other Music timpani

In a similar situation, one might choose to add, in the exposition of a piece written in F for example, a G and C timpani part to the statement of the second subject which is stated in the dominant key of C. This added part, though in the dominant key of C, is justified as being a literal statement of the composer's written part that appears in the recapitulation in the tonic key F with the tuning of C and E the only two pitches the composer actually uses throughout the work.