David Jack (musician)
David Jack (born January 20, 1960, in Bristol, Pennsylvania) is an American children's performer, composer, pianist and tap dancer.

Biography
Jack is a Parents' Choice Award-winning composer and performer of children's music. He has appeared on television and radio and frequently entertains at children's music festivals throughout the United States. 

He is best known for his eleven years of daily performances at Sesame Place, during which he performed live on stage with Elmo and other Sesame Street characters. 
  
Jack is also the founder of SchoolAssemblies Brands, a company based in Perkasie, Pennsylvania that provides curriculum-based school assembly programs to elementary schools across the country.

References

1960 births
Male actors from Philadelphia
American children's musicians
Living people
Musicians from Philadelphia