Is this a possibility?

[mondoaction]

Hi Guys

I recorded a song with live electric guitar on 1 track and a live vocal on another track.

Naturally the tempo fluctuates a bit.

Now I'd like to experiment and overdub some drums from a drum machine too.

Is there a way to map the tempo I recorded at so a click track of my fluctuating tempo is generated?

Then I'd know where the beats are and can match the kicks, snares etc up by eye? I know its a tedious method...is there another idea I'm not thinking of?

I understand the ideal thing is to play live to a click but that didn't happen here.