Last Thursday, Lambert told fans on Twitter that she had just arrived in Chicago and was hanging out at Joe's Bar. It turns out her band and crew have a band of their own called Permanent Damage and would be playing later that night.

According to CMT, Lambert and Gwen Sebastian took the stage to play some cover songs along with the band. The show itself lasted three hours and the covers included the Violent Femmes' 'Blister in the Sun," Dire Straits' 'Money for Nothing," Brooks & Dunn's 'Boot Scootin' Boogie" and AC/DC's 'Have a Drink on Me."

Lambert also performed No Doubt's "Spiderwebs" while dressed in cut-off jeans, fishnets and a Joe's Bar tank top. At the track's start she was flipping through the lyrics set atop a music stand at the front of the sage.