Everyone needs a dictionary of musical terms at
different points in their playing. From tempo marking indications to
types of musical dance forms, you will need to look up various musical
terms quite often. If you don't actually own your own dictionary of
terms, there are numerous music dictionary resources handy on the Internet
to use. Here are a few to help you take a look!
DolmetschMusic Dictionary Online -- Listings by letter, quite
comprehensive. Includes many terms drawn from the many world music
traditions, jazz, rock, pop and related musical genres. Symbol and
composer links separate.
Dictionary -- Has basic terminology by letter name, good long list.
A bit cluttered with ads.