IIMP is a relative newcomer to music periodical indexing. Provides current indexing, including subject headings and abstracts, for over 400 periodicals. The backfile, which includes neither subjects nor abstracts, is more selective, indexing a smaller number of titles, as far back as 1874. For more information, see http://www.proquest.co.uk/products_pq/descriptions/iimp.shtml.
IIMP Full Text includes the full text of 130 journals. Full text varies from a few years in some cases to complete runs in others. See: http://www.proquest.com/products_pq/descriptions/iimp_ft.shtml. The only major periodical index in music to offer full-text searching.
B-W does not own IIMP in any form.