Subject headings, as defined by Library of Congress, are a way to link books together that are in a similar subject fields. Copy and Paste them into the Search Box
hymns history and criticism
hymns Biography
hymns indexes
hymns devotional use
BV5-530 Worship (Public and private)
M - Music (scores)
ML - Literature on music (for books on composers all are in the main library collection - many are in the ML 410 followed by the initial of their last name)
MT - Musical instruction and study (all are in the Main Library Collection as well as ERC Music)