thanks for the replies guys!
I am in a band, and I have this really great cassette deck for whenever when play, and we love to hit record on a good tape (Fuji and tdk are my preferences) and let it roll all night!
and last night i almost forgot to turn off the CrO2 / type II setting, and I was just wondering what would happen IF i
"record a type I cassette on type II setting, and vice versa".