It is also possible to describe sonata rondo form by starting out with rondo form and describing how it is transformed to be more like sonata form.
Cuthbert Girdlestone conjectured in his "Mozart and His Piano Concertos" that the sonata rondo form derives also in part from the dances en rondeau of Jean-Philippe Rameau, among others, by structural elaboration, possibly an innovation of Mozart's [REF].