There is no available information about a US nonprofit organization named "Bandmasters Marching Show" with an EIN of 43314111. If you have any additional details or context, it might help in providing a more accurate response. However, based on the provided search results, here's a general overview of relevant organizations:

Nonprofit Organizations Supporting Marching Bands and Music Education

Overview

The United States hosts several nonprofit organizations dedicated to supporting and promoting marching bands, music education, and related activities. While specific details about "Bandmasters Marching Show" were not found, there are several notable organizations in this domain.

Notable Organizations

• American Bandmasters Association (ABA): Founded to improve the status and repertoire of concert bands, ABA promotes band music and provides support for educational projects, composition contests, and research[1][3].

• Music for All: This organization focuses on expanding access to music in schools and communities through national and regional events like the Bands of America Grand National Championships[2].

• World Association of Marching Show Bands (WAMSB): Dedicated to promoting global communication and interaction among marching show bands, WAMSB aims to encourage participation and stage world-class band events[2].

Foundation Support

The American Bandmasters Association Foundation provides financial support for various educational projects, including the preservation of musical materials and composition contests[1].

If "Bandmasters Marching Show" is a new or lesser-known entity, more specific information might not be readily available. It is advisable to check directly with relevant nonprofit registries or databases for more accurate and up-to-date information.