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Diction for Singers
The complete vocal diction resource site. Commentary that is to the point. Supplemental visuals and lots of related resources and links.
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Vocalist
A general site for anyone interested in singing. Contains free online singing lessons and articles for vocalists related to singing plus other useful information. Resources for everyone-even kids online music games.
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Vocalist.org: Perfect Pitch
This brief essay discusses the writer's quest for perfect pitch even though he was not born with it.