You're listening to 20,000 Hertz.

Here in the United States, there's always been rivalries between the East Coast and the West

Coast. You have the Celtics versus the Lakers, Broadway versus Hollywood, bagels and

locks versus avocado toast. And of course we have the big one, Disney World

versus Disneyland. But the most famous rivalry has to be the hip-hop battle of the 90s. On the West

Coast, you had artists like Snoop Dog, Dr. Dre, and Tupac. Over on the East Coast, you had Biggie

Smalls and Puff Daddy.

But there's one rivalry that started a long time before that.

Only this time, it was a rivalry not between artists, but between instrument makers.

That's 20,000 Hertz producer Andrew Anderson.

And this one created new sounds that were beyond the wildest dreams of musicians that came before.

It led to whole new genres like disco, post-punk, and electronic dance music.

It represented two different philosophies about the relationship between a musician and their instrument.

It's one of the biggest stories in music history that you've probably never heard.

And it starts all the way back in a New York hospital in 1933.

On May 23, 1933, a baby is born in Queens, New York City.

His parents call him Robert, but he'll be known to everyone as Bob.

Four years later, and almost 2,500 miles away in Los Angeles, another baby is born.

His parents name him Donald, but that quickly gets shortened to Don.

Both boys show an early interest in engineering.

While still at school, Bob builds his own musical instruments, like simple electronic organs from plans he finds in magazines.

Meanwhile, Don makes his own radios.

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