Classical. C. P. E. Bach was an innovator as an early Classical era composer, helping to develop the sonata form that was refined by Haydn, Mozart and Beethoven. Like his father, Carl Phillip Emanuel was prolific and showed signs of true genius. SymphonyNo. 1, in three movements (fast-slow-fast) was originally in D and has been transposed down a step to C by arranger Justin Bland. This arrangement of about 12 minutes in length is appropriate for very advanced performers and could be the cornerstone of arecital program. -the publisher