What type of lists does Donald Roach's Complete Secondary Choral Music Guide provide?

The correct answer highlights that Donald Roach's Complete Secondary Choral Music Guide is a valuable resource focused on compiling repertoire lists and sources for music theater. This type of information is crucial for choral directors and educators as it helps them select appropriate pieces for various performance settings and ensures that they are aware of current and notable works within the choral and music theater repertoire.

The emphasis on repertoire lists indicates that the guide aids educators in understanding which works are most suitable for their ensembles based on age, skill level, and thematic content. Ultimately, having well-curated repertoire is essential for effective teaching and engaging performances, which is a central goal in music education. The other options, while potentially relevant to music education, do not specifically align with the focus and purpose of Roach's guide as it concentrates more on performance literature rather than techniques, audio resources, or instrument maintenance.