Mim Paquin, soprano (our daughter) at  http://www.mimpaquin.com/
    
ArkivMusic:
http://www.arkivmusic.com/classical/main.jsp   Best website to navigate with lightning fast pinpointing of
         what is available in the USA.  This site was designed by classical music CD collectors. 

Sound Dynamics Associates: http://www.sd-associates.com  Specialists in on location concert recordings of classical  music and jazz.

Music on the Web
Pipedreams:  
http://pipedreams.publicradio.org   The best weekly organ music radio program ever produced with some of the best website sound ever.  The contents of this site in truly a treasure trove of worldwide pipe organ information, pictures, recordings and access to all weekly programs going back to 2000 and all in great stereo sound. Michael Barone produces and hosts this outstanding program.  

BBC RADIO 3:  http://www.bbc.co.uk/radio3 Listen to concerts live and pre-recorded from the United Kingdom, very informative hosts and unique classical music programming 24/7.  Many Haydn House releases have been aired worldwide on BBC Radio 3