Yup, count me in...

Hahaha - yeah - then you start hearing the following sort of comment - "Very nice, but that's not how you play {insert name of tune here} "   

Here's a tune (well two tunes) that kind of do this and "meld together" in a crazy crazy way -just sing this if you recognize the lyrics - "Yes, we have no bananas, Oh bring back my bonny to me...." 

Not QUITE the same as your plan, and I LIKE the idea, especially sort of keeping "older" versions other than the most-recent un-heard across several generations of the tune.   Another aspect in adaptation/evolution is the timing - like - oh - what am I thinking of - yeah - "Auld Lang Syne" and "Comin' through the Rye" - pretty much similar in the notes played, but timing and duration and hence rhythm quite different - and -in some ways, to some ears, different enough to be considered two entirely different tunes I guess.

Good project...   

Arghhhhhhhhhhhhhh @damfino  

Worldfiddler said
"If we want to drive BillyG nuts we could do You Are My Sunshine *evil laugh* "

Indeed, Missy Mandy - however, that would be a good and very simple tune to demonstrate what I'm talking about.

Let me get something together here - I'll record the tune straight, then with a bit of "tunevoluton".

Mr Jim   

OMG @damfino - well "thanks a lot lady"        - actually, it's maybe not a bad idea - it'll break the spell that darned tune has held over me like the sword of Damocles...   I break into a cold sweat ever time I hear it mentioned, let alone played....

And, @Worldfiddler - if you don't "get" why the evil-spell of this darned tune has me in its thrall - THIS is the reason - 24 hours locked away in a darkened room, mixing down all the parts for this little project I did with a few other willing participants...

I mean - for WEEKS after the mix-down - even the "tick-tick-tick" of the clock on the wall was going "You-Are-My...."  DOH....  Ohhhh, it's painful... I need professional help...

Devil tune... 

 @mookje - at least I can start to smile about it now.... the "evil spell" is wearing off.   It really was a nightmare lining-up all the parts from other players' audio - it gave a real insight to how difficult it must be for @Fiddlerman on group projects with perhaps up to 24 players submitting multiple parts - I only had 12 audio tracks in total to mix and line up.  And in some ways, with fewer parts, it can be more difficult to get a good mix because with so few parts if you try to drop the level of one track (to hide an issue where there's been a fluffed note or timing, or otherwise poor section in the audio) you end up losing the overall feel when the instrument voice suddenly gets dropped out...    I would say NEVER AGAIN - but - you never know....  It *was* a lot of fun...