As of March 27, 2009, when Umphrey's McGee performed at The Pageant in St. Louis, they were experiencing significant growth in their career, solidified by the release of their studio album *Mantis* in 2009. This album was notable for its experimental sound and saw a continuation of their signature blend of rock, jazz, and progressive influences. This performance included the song "1348," which highlights their propensity for improvisation and dynamic live performances. During this period, Umphrey's McGee was also gaining recognition for their innovative use of technology, including webcasting their concerts, which allowed fans to experience their live shows remotely. This concert was part of a broader effort by the band to build a strong connection with their audience, both live and online, further establishing their reputation within the jam band scene.