Zack Kammerer has seen Fall Out Boy 6 times.

Fall Out Boy is a pop-punk band formed in Wilmette, Illinois, in 2001 by members Pete Wentz (bass) and Joe Trohman (lead guitar) with Patrick Stump joining as lead vocalist and Andy Hurley becoming permanent drummer in 2003., and Andy Hurley (drummer). The band’s debut album, "Take This to Your Grave" (2003) became an underground success while its sophomore album, “From Under the Cork Tree” (2005) was a breakthrough success, peaking at number nine in the US and in the top 100 in half a dozen other countries. The following year, “Infinity on High” became the band’s first number-one hit album. “Folie à Deux” (2008) was the band's final album before a brief hiatus beginning in 2009. Fall OUt Boy reunited in 2013, releasing three consecutive number-one albums over the next five years: “Save Rock and Roll” (2013), “American Beauty/Psycho” (2015), and “Mania” (2018). In 2023, Fall Out Boy released its eighth album “So Much (for) Stardust."