Die-hard music lovers, casual fans and globe-trotting tourists readily embrace Chicago as the home of the blues, spurred in large part by the Great Migration northward of Southern blacks in the early and mid-20th century.
Robert Johnson, the genre's godfather, famously sang of "Sweet Home Chicago," and the Chicago Blues Festival draws more than 100,000 people each summer.
But come next year, the National Blues Museum won't find a home in Chicago, but in a rival Midwest city 300 miles (480 kilometers) to the south.
St. Louis has its own deserving musical history, organizers of the project say, with hometown heroes such as Ike Turner, Albert King and, of course, Chuck Berry.
It's a legacy most prominently commemorated in the name of the city's National Hockey League team, the St. Louis Blues.
"We date way back," said museum organizer and music promoter Dave Beardsley. "Chicago didn't really blow up until the '50s, 'til Muddy (Waters) plugged in and went electric. We go back to W. C. Handy in 1893. ... Our roots are far deeper than anyone knows."
Handy wrote "St. Louis Blues," one of the first blues songs to become a pop music hit, performed by such musicians as Louis Armstrong, Bessie Smith and Benny Goodman.
The St. Louis museum grew out of a shared passion by Beardsley and fellow blues buff Mike Kociela, also a concert and festival promoter. Inspired by regular trips to the New Orleans Jazz and Heritage Festival, Kociela created St. Louis Bluesweek in 2010 to honor the city's musicians and heritage.
While Chicago has tried and failed to launch similar blues shrines, St. Louis' $14 million project won the backing of a local developer who wanted a museum to anchor a retail, residential and office complex next to the convention center downtown, just blocks from the Gateway Arch.
"There really wasn't a museum that told the entire story of the blues, from Day One through now," Kociela said. "I knew what it could do for our city and our region. This is a massive international tourist attraction."
Kociela and Beardsley reached out to leaders and musicians in cities with comparable bragging rights - chiefly Chicago, Memphis and Clarksdale, Mississippi - for help, and none objected, Kociela said. To pitch the project, they brought in some of the genre's contemporary heavy hitters: Buddy Guy, Robert Cray, Shemekia Copeland, Derek Trucks and Trombone Shorty.
It worked. Pinnacle Entertainment, which owns two casinos in the St. Louis suburbs, donated $6 million to the planned 23,000-square-foot (2,140-square-meter) interactive museum with classrooms and a small theater to host local and national acts.
As for the home of the blues, Chicago is focusing on promoting live performances year-around instead of investing in a brick-and-mortar tribute, said Michelle Boone, commissioner of Chicago's Department of Cultural Affairs and Special Events. Nor is the city involved in last-gasp efforts to preserve the former home of Muddy Waters, which lapsed into foreclosure and was nearly condemned before a relative of the blues titan purchased it at auction over the summer for $100,000.
"There aren't any conversations about that right now," Boone said.
An affluent couple has proposed a museum called "The Blues Experience" first at a vacant shopping center in Chicago's Loop and more recently at Navy Pier. But neither responded to messages seeking comment and city officials said they could offer no specific details.
"We're the world's capital of the blues," said Linda Cain, publisher of an online guide to Chicago blues. "We could stand to do more."
George Brock, an 81-year-old blues harmonica player, stands behind St. Louis' claim to blues fame. A half-century ago, Brock moved to St. Louis from Clarksdale, Mississippi, and he calls his adopted hometown a gem where blues can still be heard seven nights a week and a musician can make an honest living.
"They overlooked St. Louis," he said. "St. Louis has just as much blues as Chicago."
St. Louis is "a major blues community," says Robert Santelli, a music historian and executive director of The Grammy Museum in Los Angeles. It's a distinction earned in part due to the Mississippi River and the stream of levee builders and stevedores who called the city home.
What it lacked, though, was a major record label to draw blues recording artists. Chicago had Chess Records and Alligator Records, while St. Louis could counter only with the more jazz-tinged Delmark Records, which lasted five years before relocating to Chicago in 1958.
Santelli, a former vice president of the Rock and Roll Hall of Fame in Cleveland and CEO of the Experience Music Project in Seattle, said St. Louis' project must cultivate a loyal local audience and build strong educational programs in order to succeed. Several music museums, from EMP to the Alabama Music Hall of Fame's paean to the Muscle Shoals sound, have struggled financially.
"Teachers are going to want to be sure that their students learn something of substance," he said. "It's not just going to be a day off listening to music."