I purchased it at a music educators convention a few years ago and used it with individual students until I became sick (with cancer) and had to be out for almost 2 years.

It was PERFECT for my auditory/visual learners who struggled with pitch matching, as well as some of my students with mild learning disabilities. 
(the other animated what-nots and explanation sections were a bit in accurate, definitely silly and not suitable for all ages, but It was easy to just skip it and use only what I wanted)
It was also great for improving sight-reading skills for the beginners because the software shows the NOTATION as they sing.
The assessment & ability to save each recorded lesson aspects are also unsurpassable by any other program out there!! 

NOT-SO-GOOD:
UNFORTUNATELY…now that I am back and trying to use it again, on my new computer, I am having nothing but problems with the software. I’m guessing that since it doesn’t seem to be available anymore, that there must be updated drivers that are needed.
If ANYONE knows of a way I can get my hands on an update or a driver that will work, PLEEEEEEAAAAASSSE let me know asap! ;-) Thank YOU!