Garth Brooks surprised fans with a secret concert at Denver's The Grizzly Rose under the alias "Yukon Jack," drawing eager crowds despite the sweltering heat.
This article was originally published by 9News Colorado (RSS) on Friday, September 4, 2026. TownPost surfaces local news from over 40 outlets and uses AI to score each story for relevance to Longmont and the surrounding area.
Relevance score: 30/100. This story has regional context that may affect Longmont.
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