sentences:  Fosser, a puppeteer and artistic director of the legendary Kungsholm Miniature Opera in Chicago, began designing the puppets that would eventually be used in his Opera in Focus productions in the late 1930s.The cost involved in building each elaborately articulated puppet prevented him from constructing them until 1956.He presented the first Opera in Focus performances—by invitation only—in 1958 in a rented store on the north side of Chicago, where they were received with great enthusiasm.