Marvin Fisher, 76, composer of “When Sunny Gets Blue,””Destination Moon” and other popular songs, died Aug. 21 of a heart attack.Fisher worked as an arranger for the orchestras of Glenn Miller, Jimmy and Tommy Dorsey, Les Brown and Johnny Green in the 1930s and ’40s. He also played piano with the Justin Stone Orchestra. In the 1940s he began composing and working as the West Coast representative for Fred Fisher Music Co., founded by his father in 1907. After his father’s death, he and his brother, Dan, took over the company. He later founded a subsidiary, Marvin Music, which published his songs and those of Nat (King) Cole, Rosemary Clooney and Peggy Lee.