 He appeared in theatrical performances, including Michael Stewart's "Shoestring '57" and Hermione Gingold's "Sticks and Stones".He was well known for conceptual humor, based on incongruity, such as the routine in which an astronaut balks at being launched until someone finds his box of crayons, containing "a green, an orange and two blacks"; as well as using his musical training in a routine, such as "Alcatraz - the Musical," and "La Bonanza," a parody of an opera based on a popular TV Western, which he performed on The Johnny Cash Show.Veteran comedian Phyllis Diller credited Manna with helping improve her standup routine when she was starting in the business, "It was at New York's Bon Soir nightclub during the early sixties that the comic Charlie Manna gave me the greatest advice about how to get on