Pat is a founding member of the band Live and has appeared on all their albums to date. He met his future Live band mates at middle school in York, Pennsylvania. When vocalist Ed Kowalczyk left the band in 2009, Dahlheimer formed the band The Gracious Few along with Chad Taylor and Chad Gracey of Live and Kevin Martin and Sean Hennesy from the band Candlebox. They released their debut album The Gracious Few in 2010. In 2011, Live announced their intention to record new material and Chris Shinn was brought in as the new lead singer in 2012.