If you want to try this, I have short demo of how I am getting into and out of the Cantina Song. I put it between the main theme and the Imperial March. I played the transitions slowly with a metronome so you can see how the rhythm works. I started on measure 12 of main theme. I played the eight notes straight, but in the actual song they are swung. The Cantina song is in cut time so you can keep the same tempo with half notes as one beat instead of the quarter notes. The chord going in is the Dm from Cantina song replacing the Ddim7. Coming out of the Cantina song I play the F, followed by Ddim7 (on first and second frets), leading into measure 14, start of the Imperial March.
https://youtu.be/Ow1MS6PJR5g