Norah Jones.

Norah Jones performs as a special guest with The Wild Rovers at the Codfish Hollow Barnstormers Sunday, outside Maquoketa, Iowa.

MAQUOKETA, Iowa — The rumors were true.

A sold-out crowd of music lovers turned out at the discreet Codfish Hollow Barstormers, in rural Maquoketa, Sunday night for a concert featuring big names from the indie music world and what the venue teased for weeks as surprise special guests that fans wouldn’t want to miss.

The Wild Rovers Tour, featuring a compilation of bands including folk rockers Cory Chisel and Adriel Denae, The Candles and SpaceWoman, brought down the barn. But it was the guest of honor that turned out to be the real draw.

“We came to see Norah Jones,” answered patron after patron, when asked what brought them out to the barn Sunday night.

The New-York based Candles have toured across the U.S. and internationally and recently performed with Jones on her year-long world tour. Chisel and Denae also performed with Jones on her tour, fueling speculation by attendees that she was the mystery singer.

Patrons were in for a pleasant surprise when none other than the songstress herself took center stage in the speculated surprise appearance that didn’t disappoint.

Jones won nine Grammys for her 2002 debut album, “Come Away With Me.” She has since released five full-length albums.

A hint on the Wild Rovers Tour website posted that patrons normally pay more than $300 to see the singer. Tickets for Sunday’s show ran a mere $20 a pop.

Also appearing on stage was guitarist Bucky Baxter, a renowned pedal steel guitarist who has toured with Bob Dylan.

The Codfish Hollow Barnstormers concert, booked through Daytrotter, in Davenport, Iowa, was the fourth tour date on the Wild Rovers Tour.

“We’ve played everywhere, but there is nothing like this place in the country,” said Candles singer and guitarist Josh Lattanzi to the crowd. “You guys are really lucky. It’s fun in this barn.”