I'm about to purchase one of these ear training/sight singing products.(being a vocalist, I feel "incomplete" not knowing how to sight-sing)
Anyway the thing is I don't mind spending good money, but there's SOOO many resources out there (both commercial products and free software) that I can't distinguish what's good and what's not good. So if any of you have any experience with some of these products in the links below, please advise me on what's best. Thanks a bunch fellas.
http://www.vocalist.org.uk/pitching_exercises.html
(scroll down to where it says Free online ear training, commerical programs, Ear Training & Sight Singing Books)
http://herken.sourceforge.net/eartrain.htm