This is for the oldies in the bunch. In the summer of 1969, the New York Post Office received a letter with no address other than "The World's Greatest Drummer."
With no return address, the sorter wasn't sure what to do. Fortunately, a former drummer worked in that post office. He found Gene Krupa's address and forwarded the letter to him.
Krupa read the envelope and thought, "This isn't for me" and forwarded it to Max Roach. Roach thought, "Somebody must have made a mistake" and forwarded it to Buddy Rich, renown for his incredible ego. Grinning from ear to ear, he ripped open the envelope and it began, "Dear Ringo. . ."