Thank you Robert for the welcome and the review.
Yes, it helps, a second trained ear always helps. Maybe it's a psychological thing - when I hear myself singing, I 'know' what sound I wanted in every second of the song, and if it is not a full match, I'm annoyed, athough it could be harmonically correct. My backround is ~10 years of singing in the car just for fun, and lately 1,5years of CVT lessons in a local singing school from where I've picked up various things to consider.
I will very likely take up your program during summertime!
Cheers,
Vahur