which of following musicals of the 100s has helped shaped current genres such as country and rock music

It is unclear which musicals you are referring to as "the 100s." However, if you mean musicals from the 1900s, several have had an impact on shaping current genres such as country and rock music. Here are a few examples:

1. "Oklahoma!" (1943) - This musical by Richard Rodgers and Oscar Hammerstein II incorporated folk and country elements into its score, which influenced subsequent country music compositions.

2. "Hair" (1967) - This rock musical by Galt MacDermot, James Rado, and Gerome Ragni brought elements of rock music into the theater, and its success led to the increased inclusion of rock music in musical theater.

3. "Jesus Christ Superstar" (1970) - This rock opera by Andrew Lloyd Webber and Tim Rice introduced a rock-inspired score, which influenced the development of the rock musical genre.

4. "Rent" (1996) - This rock musical by Jonathan Larson incorporated alternative rock and grunge elements, appealing to a younger audience and influencing the direction of contemporary rock music.

Please provide more specific information or clarify your question if these musicals are not what you were referring to.