This recording, assuming it is done on an arranger keyboard, is undoubtedly the best recording I have ever heard as far as it sounding like actual live instruments for the most part.
I am not going to guess right now which keyboard this might be, but the sound makes it such that I would like to have this keyboard.
Since the rock band sounded so very real I would also like to comment on the parts that while they sounded pretty good, I could tell that it was a keyboard. That would include the vocal harmonizer. Although it sounded pretty good for what it is, to me vocal harmonizers sound fake, all of them, and they always will sound fake. The brass band, although good for a keyboard did not sound as real as the rock band, which really sounds authentic.
Good recording and mixing technique.
I'll be interested to see which instrument this is
Best
Scott Langholff
http://ScottLMusic.com