Jarvis was born October 31st, 1915 in Indiana. She was a jazz pianist and began playing in Chicago & Milwaukee nightclubs, radio stations & television shows in the 1950's. She was approached by the Milwaukee Braves to play organ at County Stadium which she did for the next eight years.
She moved to New York and got the job at the new Shea Stadium in 1964. She will always be remembered at Shea for playing an alternate theme song, "Let's Go Mets", as the team took the field before every game. She also made famous her renditions of the Mexican Hat Dance during the seventh-inning stretch. Jarvis became a Shea classic, and would play the organ through the 1979 season. The Mets never replaced her.