Photo circa 1950. Mercedes LeCorgne. The year 1937, Mercedes Paulson and Sue Wheeler first performed together at the dueling pianos (thought to be the first in the country). "Sue" was actually Sara Belle Wheeler, a native of Vicksburg who had been educated in New Orleans. She passed away on Saturday, March 10, 1956 at the age of 38 after having played at Pat O's for 19 years. Mercedes LeCorgne Paulson, a native New Orleanian, died on Thursday, April 10, 1980 at the age of 74. Her booming baritone, which graced the main bar for 32 years, is still remembered by many. She retired from Pat O'Brien's in 1968.