Hey, fellow American Idol fans! Want to hear more from last night’s Chicago auditioners? Well, you’re in luck! We’ve scoured the Web and found previously recorded music by some of the musicians, as well as some interesting background information about one blink-and-you-missed-him hopeful. Without further ado…

Keith Semple: Sadly, a Fox spokesperson confirms that Semple did not attend Hollywood Week due to Visa issues. But if you watched TV in England circa 2002, you might have already seen the sensitive rocker who performed Bryan Adams’ “Heaven” in front of Shania Twain & Co. Indeed, the guy spent a few months on the tube while starring on — and winning — the U.K.’s Popstars: The Rivals. (Think: American Idol meets Making the Band.) Boy band One True Voice was created out of the show, and, after signing with Jive Records, the act debuted its first single, “Sacred Trust/After You’re Gone,” (embedded below) which became a hit overseas. One year later, the band broke up, and Semple journeyed to the states to head Chicago band 7th Heaven. To hear some of Semple’s solo music, go to his website.

Katelyn Epperly: The singer and recent victim of a broken home had her own band, Katelyn & the Bruises, prior to her successful audition. According to the group’s Facebook page, the folk-rock band was “the product of a little bit of free time, summer air, and friends.” Hear three songs on the band’s MySpace page.

John Park: The dude who made Shania sweat last night belonged to Northwestern University’s respected a cappella group, Purple Haze. See him perform Christina Aguilera’s “Come On Over” with the group here.

Paige DeChausse: You can find music from the soulful songbird in several place on the Web: Not only does her MySpace page boast a cover of Norah Jones’ “Turn Me On,” but several videos of her performing with band Chicago Blues Angels are posted on YouTube.

Like what you hear, PopWatchers?