On January 3, 1964, "The Jack Paar Program" ran Beatles concert footage licensed from the BBC "as a joke", but it was watched by 30 million viewers. While this piece was largely forgotten, Beatles producer George Martin has said it "aroused the kids' curiosity". In the middle of January 1964, "I Want to Hold Your Hand" appeared suddenly, then vaulted to the top of nearly every top 40 music survey in the United States, launching the Fab Four's sustained, massive output. "I Want to Hold Your Hand" ascended to number one on the January 25, 1964, edition of "Cash Box" magazine (on sale January 18) and the February 1, 1964, edition of the Hot 100. On February 7, 1964, the "CBS Evening News" ran a story about the Beatles' United States arrival that afternoon in which Walter Cronkite said, "The British Invasion this time goes by the code name Beatlemania." Two days later, on Sunday, February 9, the group appeared on "The Ed Sullivan Show". Nielsen Ratings estimated that 45 percent of US television viewers that night saw their appearance.