If we are talking about Marathi and Guitar together - many songs come to my mind, the first one being 'Mehendichya panawar'.
Well, ofcourse one should not try to forcefit natyasangeet and folk music into guitar. One can attempt for a remix but originals be originals. I mean just imagine - a gondhal or a Bharud or a powada with a touch of guitar!! Some of our folk music better be unmixed with remix!
By the way, perhaps many come straight to the marathi group. Since I registered just now, I visited first the root forum and then came to marathi forum. There you can see some interesting statistics and can explain why we feel that there is no guitat in marathi! 82 threads in marathi Vs next minimum of 506 threads in Tamil! No wonder we feel very lonely in the world of guitarist. Is there is forum for daf, tuntune, dhulki, chaal and peti? Or for taal, zaanj, mrudung and peti?