This is the first time he'll do so without an audience.
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"I'm a Yankee Doodle Dandy! I was born on the Fourth of July," he explained. "Being able to perform it in front of so many people over the years just makes it extra special."
Sikorski got a call from Astros officials on Friday, just hours before the first game of this year's shortened season.
He immediately started scrambling for video equipment and back-up music. He even reached out to other Astros music legends for help.
"The need for music for all of us," said Jim Connors, who was the official Astros organist from 1984 to 1987. "Whether it's at a ballgame or in our everyday lives. Right now, it's therapeutic, to say the least."
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Connors and Sikorski are now collaborating on the performance, which they hope will be played before a home game this year.
It's all part of a season no die-hard Astros fan has experienced before, like seeing fewer games and no fans in the stands.
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This year, before the National Anthem on opening day, most of the Astros players took a knee.
"You may or may not agree with them, but isn't that the way the United States works?" Sikorski said.
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