Mary Lou Metzger is an American singer and dancer best known as a cast member on The Lawrence Welk Show. The only child of Ernie and Helen Metzger, the family moved to Havertown, Pennsylvania where at the age of seven Metzger officially began her performing career, which included appearances on The Ted Mack Amateur Hour and acting in a national tour of The Music Man by Meredith Willson. While a student at Temple University, she went to Los Angeles, California to appear on the television program GE College Bowl; while there she auditioned for Lawrence Welk and was accepted in the show's apprentice training program. During her twelve years on the show, she sang as part of a female trio with fellow Welk stars Gail Farrell and Sandi Griffiths, various group numbers, and song-and-dance numbers with Jack Imel; she also danced with the maestro himself at the end of each show. She was the most popular member of the trio and endeared herself to the audience with her trademark big smile, which to this day is her most famous attribute. 

November 13th, 1950 in Pittsburgh (Age 74)