is this band involved in any controversy?
Yes when James Brown was one of the Hall of Fame's first charter members to be inducted
Rock and Roll Hall of Fame controversy and 2012 induction
In 1986, the first committee of the Rock & Roll Hall of Fame announced that James Brown would be one of the Hall of Fame's first charter members to be inducted. 
how much did the blues brothers movie cost to make More than $17.5 million who directed it? John Landis who did its background score? By rhythm and blues (R&B), soul, and blues singers James Brown, Cab Calloway, Aretha Franklin, Ray Charles, Chaka Khan, and John Lee Hooker who starred in this film? John Belushi and Dan Aykroy what is this r&b refers to? Rhythm and blues,  is a genre of popular music that originated in African American communities in the 1940s and the next one of r&b? Soul music is a popular music genre that originated in the African American community throughout the United States in the 1950s and early 1960s you have mentioned a list of singers; is the first one related to any band? Yes. The Famous Flames
The Famous Flames are sometimes erroneously identified as James Brown's "band", a confusion partly fostered by their record companies' inconsistent labeling credit practices. Yes, they were inducted in April 2012 alongside other "backing groups". Yes - Rock and Roll Hall of Fame controversy
The Famous Flames The Famous Flames The Famous Flames
Introduction Rock and Roll Hall of Fame controversy and 2012 induction Rock and Roll Hall of Fame controversy and 2012 induction

The Famous Flames are sometimes erroneously identified as James Brown's "band", a confusion partly fostered by their record companies' inconsistent labeling credit practices. Although members of the group did play instruments in some of their earliest shows and recordings, by 1959 Brown had hired a touring band and from that point on, the Flames contributed primarily as backing vocalists and dancers. The band was billed separately as the James Brown Band, and later as the James Brown Orchestra. The Famous Flames (Byrd, Bennett, Terry and Stallworth) were inducted in April 2012 alongside other "backing groups" such as The Midnighters (Hank Ballard), The Comets (Bill Haley), The Crickets (Buddy Holly), The Blue Caps (Gene Vincent) and The Miracles (Smokey Robinson). Since all these lead singers were actually "members" of these groups, these were not really "backing groups" at all. This was highlighted by Smokey Robinson, who did the induction honors for all of the groups, including his own Miracles, who stated, "These people do not stand "behind" you. They stand "with" you." "These are "not" backing groups. These "are" the groups." Bennett, as the Famous Flames' only surviving member, accepted the honor in person in Cleveland on April 14, 2012. Bennett further stated the induction was not only a correction for the Rock and Roll Hall of Fame committee's mishap in 1986 but also a reunion: "For years, I felt like we were all separated," said Bennett. "I feel like we're whole again In 1986, the first committee of the Rock & Roll Hall of Fame announced that James Brown would be one of the Hall of Fame's first charter members to be inducted. However, Brown's former singing group, the Famous Flames, were not included in this induction. The Rock & Roll Hall of Fame's criterion states that only artists whose first recording had been out for more than 25 years were eligible for induction. Brown's first solo recording did not meet that criterion. Rock & Roll Hall of Fame president and chief executive officer Terry Stewart contended that Brown was indeed eligible for induction "but" as a member of The Famous Flames. Concerning the Hall of Fame's failure to induct The Flames with Brown back in 1986, Stewart went on to say: "There was no legislative intent why they weren't included; somehow they just got overlooked." 
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The Famous Flames [SEP] Rock and Roll Hall of Fame controversy and 2012 induction
In 1986, the first committee of the Rock & Roll Hall of Fame announced that James Brown would be one of the Hall of Fame's first charter members to be inducted. However, Brown's former singing group, the Famous Flames, were not included in this induction. The Rock & Roll Hall of Fame's criterion states that only artists whose first recording had been out for more than 25 years were eligible for induction. Brown's first solo recording did not meet that criterion. Rock & Roll Hall of Fame president and chief executive officer Terry Stewart contended that Brown was indeed eligible for induction "but" as a member of The Famous Flames.