Two Peter Rabbit music books by Christopher Le Fleming were published in December 1935 under the combined imprint of J. & W. Chester, Ltd. and Frederick Warne & Co. Ltd.. The first book contained six easy piano solos and the second book six easy piano duets. Both books were intended for children aged ten to twelve years. The fifth piece in the book of solos was "Tom Kitten" and the fourth piece in the duet book was "The Puddle-Ducks Take a Walk". Potter thought the music charming but too difficult for children to perform. She supplied six illustrations for the first book and twelve for the second book because it was a collection of duets. "I have been very long over them," she wrote Le Fleming, "Doing them at odd times in a busy season of the year. Some are better or worse than others." She had difficulty with the ducks. "The ducks are least satisfactory. I am having another try at Pit Pat Puddle." Chesters assured Potter her preliminary pencil sketches could be reproduced nicely but, in the end, they were inked-over by another artist without Potter's knowledge. She was disappointed with the results. Both volumes were released in paper or board cover formats.