Route 66 Casino has a venue worth checking, yo. It’s called Envy (14500 Central SW-I40, Exit 140), and on Thursday, Dec. 4, the club-within-a-casino hosts artsy post-grunge Houston maniacs Blue October. It’s angsty, rocked-out stuff from America’s heartland, but frontman Justin Furstenfeld does a damn good job of it. Along with brother Jeremy beating the life out of some Ludwig brand skins and violinist/keyboardist Ryan Delahoussaye adding a yearning zip to the proceedings, Blue October has a noticeably stimulant effect on listeners. Producer Steve Lillywhite helped define their sound on 2009’s Approaching Normal, an album that effectively demonstrated that grunge can still be great, albeit sans the gravitas lent it by a certain North Woods gnome.