LC call numbers to search or browse
REF ML48--ML49 IPA transcriptions & translations
REF ML54.6 Individual composers
MT883 Pronunciation. Diction
P227 International phonetic alphabet
Subject headings to search or browse
In main search box on homepage type the following exactly as given here: ipa OR "international phonetic alphabet" Use the filters on the left-hand side of the screen to narrow your thousands of results to online, in the library, articls, scores, operas, songs, phonetic alphabet, and more.
Do a title browse search for Vocal library. Most volumes in this series have IPA transcriptions and come with CD that contain diction lessons.