When Jay-Z was putting together the eclectic roster for his inaugural [article id="1691829"]"Made In America"[/article]
 festival, he made sure to put together a mix of hip-hop, R&B and some of his favorite indie and rock bands.

That explains why Pearl Jam is headlining the second day (September 2) of the Philadelphia festival and such blog radio favorites as Passion Pit, Dirty Projectors, Santigold and punk icons X are on the list.

One name that was missing from the festival's poster on Wednesday (August 29), though, was Soundgarden singer Chris Cornell. Among the first acts announced for the two-day event slated to kick off this Saturday, Cornell's name was abruptly scratched from the lineup on Tuesday. "Unfortunately, due to a scheduling conflict Chris Cornell is unable to perform at the Made in America festival in Philadelphia on September 2 as previously planned," read a note on Cornell's site. "Apologies for any inconvenience or disappointment."

A short time later, Cornell revealed that he will join the National in "opening" for President Obama at a campaign rally in Des Moines, Iowa on Saturday.

A spokesperson for Jay could not be reached for comment at press time, but some of the comments on Cornell's site were testament to the disappointment of fans who were hoping to see him play alongside other major names such as Skrillex, Drake, the reunited Run-DMC, Odd Future, the Maybach Music Group and D'Angelo.

"This blows," wrote fan Leonora M. "The only reason I got a ticket was the possibility of TOTD [Temple of the Dog]. I did not even consider going until Cornell was added. I'm definitely bummed and out 90 bucks."

Another fan, Josh C., added, "I understand schedule conflicts, but did this just come about? It is 4 days before the show! Did you not know this a month ago, 2 weeks ago? I purchased tickets just to see Chris, I spent good money."

Cornell responded to those complaints with a Facebook post on Wednesday, in which he assured fans that this was not a last-minute scratch. "Woke up to learn some people f---ed up," he wrote. "I pulled out of the MIA festival 2 weeks ago. I apologize to my fans that you were not told and bought tix. I will find a resolution and get back to u."