"I miss his humor, his insights into so many things and his friendship." Bob Zappa: Growing Up Zappa  Charles Robert “Bobby” Zappa was composer and rock musician Frank Zappa’s younger brother by three years. He graduated from high school in Claremont, California in 1961 and soon after he joined the United States Marine Corps. His first tour of duty was with the 2nd Battalion, 1st Marine Regiment,…