There is software that converts midi files to patterns .... in sections.
For example, NY NY.
Var1 - this would be the exact notation of the intro ... about 4 bars or more.(including chord changes)
Var2 - this would be the main body of the tune and might be longer than 4 bars ... depending on the arrangement.
Var3 - might be the solo section
Var4 - the slowed down section at the end.

This method allows the player to extend sections at will(or Grace....whoever)until you are ready to go on to the next section.
IT sounds more like the original recording this way, but it's a weird way of playing, in my opinion. It's like building a puzzle - only certain pieces fit in certian places. You can never use a pattern for another song either because it is too specific. I'd rather just have a sequence for stuff that needs too many hands.

The trouble with playing guitar was - I am NOT a lead player. I just plunk out the changes and sing. His arrangements were so full that my chords clashed too often. Too many notes ... as it were. The low notes especially. I take a sax player out as often as I can, and we have a ball! He never gets in my way unless he playes the melody while I'm singing it. ( I HAAAAATE that)It sucks the spontinaety right out of my head. Like wearing a ball and chain.

I am SO suited to being a solo player because of my short attention span. I change so often that it's murder for people to try to follow along. On the other hand ... I can FOLLOW very well. I'm really a great sideman to have on a gig - I fill in horn parts, and string lines and sing 5 part harmony backgrounds. It's a gas.