Astrid Jorgensen used her love of communal singing to build Pub Choir - a concept she took all the way to America's Got Talent.

The idea involves turning a theatre of regular people into a choir and with Jorgensen's tuition and a PowerPoint, any group can sing a three-part harmony.

She used her experience to craft a memoir - Average At Best.

"Can everyone learn to sing and win a Grammy Award? Absolutely not. But can everyone physically sing? Yes! If you can talk, it's the exact same mechanisms that help you to sing." 

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