Handel would be happy to hear his Sonata in D Major being played by a young violinist standing on a stump in the sunshine of a spring day in the mountains in Canada. (And the young violinist's mother was happy to be greeted by this scene and its accompanying sounds upon returning from her run.)
Sophie has busking aspirations this summer so she is eagerly reviewing an hour or two of repertoire and polishing it up. And I suppose practicing outdoors is good preparation for busking. One can practice dealing with butterflies, hair caught by the wind, curious dogs, crowing roosters and sun in eyes ... it's all part of the fun.
(Note mug of London Fog at her feet.)