Ok. I have a few files to share
I have three files: two instrument .WAV files and a temp Mix .MP3 so you can here what I'm aiming for...
Here is the temp mix with my additions:
https://www.dropbox.com/s/invh926e5v...Smix1.mp3?dl=0
Let me tell you a bit about what I've done.
I created a Tempo map of your song, then added two midi - FREE VSTi keys/synths. They are FREE but don't be fooled, they sound very professional and get the job done.
The first is called TRIPLE CHEESE and I used the GRUYERE setting.
https://u-he.com/products/triplecheese/
https://www.dropbox.com/s/xrjnje5v76...heese.wav?dl=0
The second is called Poly 2106 by Synthescience. I used the BRASS setting.
https://www.kvraudio.com/product/pol...-synthescience
https://www.dropbox.com/s/a3plyqicyu...y2106.wav?dl=0
I tried hard NOT to get in the way of your excellent version of the S&G song. It took some doing --- as I tend to go overboard: My first inclination was to create a crescendo -- keep adding more stuff as the song progresses... I was going to add bass and a bit of classical guitar, but decided not.
Please feel free to mix the song as you see fit. My mix was just to show you where I was going. You can mute pieces, cut and paste some sections, etc.
Also, I'm pretty sure two waves files should line up with your other tracks - assuming the start of your Render is the start in your project. I'm sure you'll manage to get them in sync -- since you have my temp mix as a guide.
Let me know what you think. K?