First, thanks to Persist for his earlier versions of this. I relied upon them heavily, making minor edits to the drums and bass to suit my tastes.
This version uses the Santana Piano and Organ:
As usual, I am including the .sng, midi part file and pdf cheat.
Bertha.zip (58.7 KB)
Version was updated on 2019-08-22 to make a correction to the chorus in the attached pdf. The .sng already contained the correct chord changes.