|  | Most of the 
	headlines this summer concert season have been grabbed by Lollapalooza, 
	which has been remade as a destination festival in Grant Park next week. But 
	a more artistically challenging event that better captures the breadth of 
	underground music circa 2005 will be held this weekend in another city park 
	3-1/2 miles from Hutchinson Field. Presented under the 
	aegis of the hipster Web site PitchforkMedia.com (along with its own roster 
	of corporate benefactors), the Intonation Music Festival comes to Union Park 
	at Randolph Street and Ashland Avenue starting at 1 p.m. Saturday and 
	Sunday. The name may not have 
	the same recognition factor, but promoters have certainly tapped into the 
	eclectic and independent spirit that powered the best Lollapalooza tours in 
	the early '90s, with a promising lineup of diverse and challenging bands 
	presented on two stages, both at the Lake Street end of the park, for the 
	bargain price of $15 per day. (Two weeks out, promoters already had sold an 
	impressive 15,000 tickets for the weekend.) 
		
			| THE INTONATION 
			MUSIC FESTIVAL  1 p.m. Saturday 
			and Sunday Union Park, 
			1501 W. Randolph
 Tickets, $15 
			per day
 (800) 594-8499;
			www.intonationmusicfest.com
 Fest facts
			
			 
			  Public 
			transportation to the Intonation Music Festival is suggested. 
			Located at Ashland Avenue and Randolph Street, Union Park is near 
			the Ashland stop on the CTA's Green Line and it is serviced by 
			several bus routes.  Tickets will be 
			sold at a temporary box office on Ashland Avenue south of Lake 
			Street. Admission is $15 per day, and there is no re-entry into the 
			park. The event will take place rain or shine.  Park and 
			festival restrictions prohibit coolers, alcohol, outside food and 
			beverages, professional cameras or video equipment, lounge chairs 
			(though folding chairs are permitted) and laser pointers. Food, 
			clothing and art vendors will be set up on site.  Concurrent with 
			the music, independent radio station WLUW-FM (88.7) will sponsor its 
			annual Record Fair on the tennis courts at the eastern end of the 
			park, offering record collectors a prime forum for finding new, used 
			and rare recordings.  Parents are 
			encouraged to bring their kids (admission is free for those under 
			age 10), and the Chicago Children's Museum will hold a Vinyl Art 
			Workshop from 1-5 p.m. on both days, allowing kids to design their 
			own album covers.  More 
			information is online at www.intonationmusicfest.com. 
			 |  |    Intonation kicks off 
	Saturday with one of Chicago's finest up-and-coming acts, the orchestral pop 
	combo Head of Femur (1 p.m., Holiday Stage), which was profiled in 
	this column in May, around the time of the release of its stellar second 
	album "Hysterical Stars." Driven by a trio of relocated Nebraskans, Ben 
	Armstrong, Mike Elsener and Matt Focht, the group can balloon to a dozen 
	members or more onstage, evoking "Pet Sounds"-era Beach Boys or the Left 
	Banke filtered through emo heroes Bright Eyes. The flavor stays local 
	with Pelican taking the Decimal Stage at 1:30 p.m. to deliver its 
	crushingly powerful instrumental stoner-rock, and the jangly garage band the
	M's following at 2 p.m. on the Holiday Stage. A.C. Newman 
	(2:45, Decimal Stage) is the red-headed singer and songwriter best known for 
	leading the New Pornographers, though he also has released a strong solo 
	album, "The Slow Wonder," strongly influenced by old-school Britpop such as 
	the Zombies and the Kinks. Led by Jason Molina and 
	hailing from Bloomington, Ind., Magnolia Electric Company (3:30, 
	Holiday Stage) has recorded its raw, violin-laced roots-rock with Chicagoan 
	Steve Albini, while at the opposite extreme, Fourtet (4:30, Decimal 
	Stage), aka one-man band Kieran Hebden, is a champion of "laptronica," 
	delivering twisted loops and broken beats via computer. Rounding out Saturday 
	afternoon are the Canadian indie-rock supergroup Broken Social Scene 
	(5:30, Holiday Stage), Memphis noise-rockers/indie popsters the Go! Team 
	(6:30, Decimal Stage), hip-hop innovator and sonic terrorist Scott Herren, 
	aka Prefuse 73 (7:20, Holiday Stage), and the Canadian synth-rock duo
	Death from Above 1979 (8, Holiday Stage). Capping the evening: 
	another of Chicago's own, the ever-evolving instrumental (don't call them 
	"post-rock") masters Tortoise, who take the Decimal Stage at 9. The 
	group is gearing up to release an album of diverse covers with vocalist Will 
	Oldham, and the buzz is that he will appear with the band at the festival. Getting the party 
	started on Sunday at 1 p.m. on the Holiday Stage are Detroit wild men 
	Thunderbirds Are Now!, followed by Swedish ork-popsters Dungen 
	(1:30, Decimal Stage) and two frenetic post-punk combos from the California 
	Bay Area, Xiu Xiu (2, Holiday Stage) and Out Hud (2:45, 
	Decimal Stage). The Hold Steady 
	(3:30, Holiday Stage) draws inspiration from the hearty Midwestern punk of 
	the Replacements and the Grifters, while Chicago's violinist and songwriter
	Andrew Bird (4:30, Decimal Stage) takes his musical cues from all 
	over the map, as evidenced by his recent album "The Mysterious Production of 
	Eggs." San Francisco's 
	Deerhoof (5:30, Holiday Stage) is a purposely naive and childlike (a la 
	the White Stripes) noise-pop band, while the Secaucus, N.J.-based Wrens 
	(6:30, Decimal Stage) deliver old-school '80s-style jangle pop. Wrapping up the festival 
	Sunday evening are Les Savy Fav (7:30, Holiday Stage), a Rhode 
	Island-based emo band, and the Decemberists (8:30, Decimal Stage), a 
	Portland ork-pop quintet profiled in this column last summer. The Pitchfork 
	gang may have been hurt by the defection of their much-loved Arcade Fire, 
	which will perform at Lollapalooza, but for my money, Colin Meloy and his 
	mates in the Decemberists are just as strong a booking, if not better. In addition to the two 
	main stages, Intonation will feature a DJ stage hosting a series of hot 
	underground turntablists. Saturday's lineup includes Rob Lowe (1:30 p.m.), 
	Laurent from Pelican (3:30) and Will Oldham and Jean Grae (5:30 and 7:30). 
	Sunday's lineup features Peter from Baby Teeth (1:30), Reine from Dungen 
	(3:30), El P vs. James McNew of Yo La Tengo (5:30) and Diplo (7:30).   
	
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