How did Louis Armstrong get the nickname Satchmo?

Louis Armstrong had many nicknames as a child, all of which referred to the size of his mouth: “Gatemouth,” “Dippermouth,” and “Satchelmouth.” During a visit to Great Britain, Louis was met by Percy Brooks, the editor of Melody Maker magazine, who greeted him by saying, “Hello, Satchmo!” (He had inadvertently contracted “Satchelmouth” into “Satchmo.”) Louis loved the new name and adopted it for his own.