Opera Glass: Opera People
Home pages of people professionally connected with opera. Most of the people listed are performers, although there are some composers, teachers, and stage managers listed. There is also a separate page listing fan pages.
http://opera.stanford.edu/people.html

Seidel Artists Management
Provides singers of the highest quality with emphasis on vocal artistry and dramatic interpretation. Includes roster, media and more information on its artists.
http://www.seidelartistsmgmt.com/

Merseburg, Ines
Soprano born in Hamburg and raised in Bavaria. Includes a brief biography, MP3 samples and repertoire.
http://www.inesmerseburg.com/

Wattelet, Desiree
Soprano educated in Wisconsin and Texas. Provides audio samples, schedule, photo gallery and repertoire.
http://desireewattelet.com/