Hi all. I have to perform Beatles "Get Back" in two weeks! I've learnt the song for one guitar, but not having played much Beatles don't know how to get even close to the tone.

I'll be playing a Gretsch 6120 Chet Atkins with a Vox AC 15 (remember this amp has treble and bass but no mids, and has a tone cut, reverb and trem). I'll also have access to an overdrive pedal, but that's it.

I realise their setup is more complex and by 1969 possibly used Fender amps(?), but there is no prospect for any other gear. So hoping someone can tell me the best way to set this amp/box with the gear I have.

very grateful for your responses.