Ernie K-Doe (Ernest Kador, Jr.) (February 22, 1936 – July 5, 2001)

"Mother-in-Law" was written and produced by Allen Toussaint (below) who 
also played the piano solo. After several unsuccessful takes, a discouraged
Toussaint balled the composition up and threw it away as he was leaving the
studio. One of the backup singers, Willie Hopper, thought that it was such a
good song that he convinced K-Doe to calm down and give it one more try.

Allen Toussaint turned 75 in January