Does anyone remember Harmony Engine?

This is a real blast back to the past, but I could swear blind that I learnt about a singing synthesiser called Harmony Engine via this site about 10 years ago, but I can't find any info on the software at all, which is making me think I'm just nuts, despite the fact I have mixdowns from it. :/

Anyone, halp? :/

AAAGH! FOUND IT! Harmony Assistant, and I'm an idiot. >.< http://www.myriad-online.com/en/products/harmony.htm