Big O (Oscar Wheeler) is based in Milwaukee, Wisconsin and has been performing blues and soul from Florida to Nevada. He has played the Wisconsin State Fair, Summerfest, various benefits and clubs, and the band has been voted the 2006 Wisconsin Area Music Industry Blues Group of the Year.

Big O is one of the greatest Blues and R&B singers. His expertise at the keyboard comes from playing since he was a teen. The band has been referred to as "the epitome of blues".

Big O received national attention with his two-song CD titled "A Mother's Salute". It is currently being used as a fundraiser for better communication systems between our military in Iraq and their families.

Big O is guaranteed to please. He has fun at what he does and he's proud of his fans. His love of performing shows in his music and appearance. He plays a wide variety of music to keep you singing and dancing and always wanting more.

Big O and the Niteowls are proud to call Caroline's Jazz Club at 401 S. 2nd Street their home base. They may be seen there every Wednesday from 8:00 PM to 12:00 AM.