Glenn Miller Orchestra pianist Chummy MacGregor dubbed Cesar Romero's playing. Glenn Miller Orchestra pianist John "Chummy" MacGregor was a technical advisor on the movie. The composers are Captain Glenn Miller, John Chummy MacGregor, and Private Sol Meyer. Money therefore hatches another plan, one to get Chummy imprisoned. Elmer took the unusual step of patenting the "Chummy Roadster" design (see&colon;"U.S. Patent 48359"). As a young student, Chummy MacGregor attended the University of Michigan. The series came in two body styles, a 4-door Touring and a 2-door Chummy Roadster. She died peacefully in Chummy and Peter's bed in the Series 3 finale. She arrives to fill in for Chummy while she's in Africa. In Series 1 she was featured in the series finale before Chummy and Peter's wedding.