I’m looking for a children’s paperback picture book (ages 4-6 ish) about a horse that escapes his/her stables to explore for the day – particularly in fields of strawberry patches. It was accompanied by a cassette tape, and the woman reading on the tape had a British accent, similar to Haley Mills or Julie Andrews (though she definitely had an expressive quality more similar to Haley Mills). I read it/listened to it as a child in the 80’s, but the illustrations seemed reminiscent of the 60s or 70s – similar in both colors and style to this image: www.pinterest.com/pin/550987335638025397/ Or similar to the lines of the hair in these pictures: www.pinterest.com/pin/550987335638025364/ Or similar to the clouds and sun in these pictures: www.behance.net/gallery/Bella-Butterfly-Childrens-Book-Illustrations/3105177

Unfortunately I don’t have a clue as to the title of the book or the author. The above is the most I can remember. Thank you!