The desert set the scene for The Fabulists’ hour-long show­—a production filled with improv, one-liners and lots of help from the audience.

When Alex Trebek, Bruno Mars and Queen Elsa from Frozen turn up in a 20th-century fairytale romance, you know you’re in Jabberwocky country.

Angela’s Mixtape, through August 11 at the Martha’s Vineyard Playhouse, is a time-tripping, genre-blending and often very funny autobiography of its playwright, Eisa Davis, in her childhood and youth.

Mary Poppins opened Wednesday evening at the Performing Arts Center. The production by the Island Theatre Workshop includes spectacular scenery, big musical numbers, appealing child actors and an adorable dog.

“Everyone can see we’re together as we walk on by,” sang a roomful of campers and counselors at Camp Jabberwocky.

On July 18, Hamlet opens at the Tisbury Amphitheater, with jovial swordplay and playhouse veteran Scott Barrow playing the titular role. The show runs through August 11.