$ = subscription fee

Websites

Online Sheet Music

imslp.com
musescore.com
$    scribd.com
$    musicnotes.com
$    sheetmusicplus.com

Text and Song Info

artsongcentral.com
aria-database.com

Pronunciation

pronunciationguide.info

IPA Transcriptions

$    singersbabel.com
$    ipasource.com

Software

$    ipanow.com

Practice Tracks

$    choralpractice.com
cyberbass.com
choralia.net

Recommended Books

Technique/Anatomy

Your Voice: An Inside View by Scott McCoy, DMA
The Diagnosis and Correction of Vocal Faults by James C. McKinney

Sheet Music

26 Italian Songs and Arias by John Glenn Paton
Hal Leonard Standard Vocal Literature by Richard Walters
G Schirmer The First Book of ___ Solos by Joan Frey Boytim
The Oxford Book of Tudor Anthems, Oxford University Press
Hal Leonard The Oratorio Anthology by Richard Walters
G Schirmer Opera Anthology Arias for ___  by Robert L. Larsen

IPA Transcriptions

Various Opera Libretti by Nico Castel

~Alexander