Conversation so far:
Are there any other interesting aspects about this article?
The Beatles' impact on the US was particularly strong, where a garage rock phenomenon had already begun.
How did they influence them?
The movement received a major lift following the group's historic appearance on The Ed Sullivan Show.
did they appear anywhere else?
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Was there any notable songs?
a garage rock phenomenon had already begun, with hits such as "Louie Louie" by the Kingsmen.
What impact did they have?
many of America's young people began playing guitars and forming bands in the wake of The Beatles' appearance on the Sullivan show.
Where there any other impact on the future rock bands?
Tom Petty, who played in two garage bands in Gainesville, Florida during the 1960s, is quoted mentioning the Beatles' appearance on The Ed Sullivan Show.

Question: What about their appearance?
Self-contained rewrite: What did Tom Petty mention about the Beatles appearance on the Ed Sullivan show?