At approximately 8:12 p.m. Eastern time, Sunday, February 9, 1964, The Ed Sullivan Show returned from a commercial (for Anacin pain reliever), and there was Ed Sullivan standing before a restless crowd. He tried to begin his next introduction, but then stopped and extended his arms in the universal sign for “Settle Down.” “Quiet!” he said with mock gravity, and the noise died down just a little. Then he resumed: “Here’s a very amusing magician we saw in Europe and signed last summer….Let’s have a nice hand for him—Fred Kaps!”

For the record, Fred Kaps proceeded to be quite charming and funny over the next five minutes. In fact, Fred Kaps is revered to this day by magicians around the world as the only three-time Fédération Internationale des Sociétés Magiques Grand Prix winner. But Fred Kaps had the horrific bad luck on this day in 1964 to be the guest that followed the Beatles on Ed Sullivan—possibly the hardest act to follow in the history of show business.

It is estimated that 73 million Americans were watching that night as the Beatles made their live U.S. television debut. Roughly eight minutes before Fred Kaps took the stage, Sullivan gave his now-famous intro, “Ladies and gentlemen…the Beatles!” and after a few seconds of rapturous cheering from the audience, the band kicked into “All My Lovin’.” Fifty seconds in, the first audience-reaction shot of the performance shows a teenage girl beaming and possibly hyperventilating. Two minutes later, Paul is singing another pretty, mid-tempo number: “Til There Was You,” from the Broadway musical Music Man. There’s screaming at the end of every phrase in the lyrics, of course, but to view the broadcast today, it seems driven more by anticipation than by the relatively low-key performance itself.

And then came “She Loves You,” and the place seems to explode. What followed was perhaps the most important two minutes and 16 seconds of music ever broadcast on American television—a sequence that still sends chills down the spine almost half a century later.

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