Ok pal, this is one of the two segment intros they used on Nick and Cartoon Network in the 90s which were done by Filmtel and Satchi & Satchi for a 1990 syndication package.
That is Comstock, not Steiner. Big difference.
Not sure what's the deal with the replaced Rocky & Bullwinkle music. The Comstock stuff (what little of it there was anyway) is what I grew up with, so I don't think I'll ever reall enjoy Steiner's contributions.