Some other resources you might find helpful :
Websites:
Canadian Music Centre --"exists to stimulate the awareness, appreciation and performance of Canadian new music by making the music of its Associate Composers available through the Centre's collection, information resources, and production and distribution services."
British Library:Sounds -- "presents some 50,000 unique recordings .. of over 3.5 million sounds ...." from accents & dialects to music (classical, jazz, popular, traditional) to evironment and nature. A good site but many items are for EU access only.
Handbooks & guides:
All Music Guide To Classical Music: the Definitive Guide to Classical Music
ML156.9.A385 2005 REF
Handbook of music and emotion: theory, research, applications
ML3830.H195 2010 STACKS
Oxford handbook of music education
ML1.O93 2012 vol. 1& 2
Music research: a handbook
ML113.S28 2009 STACKS
Performance practice: a dictionary-guide for musicians
ML100.J29 2005 REF
The rough guide to world music
ML102.W67W67 2006 vol. 1& 2 STACKS
Student's guide to music history
ML161.S876 2007 STACKS