I was always playing the Hammond Organ back to front even during the days of the Nice, going back to 1968. Really what I was doing there, was choosing notes at random and trying to make some sense of them, improvising back to front.
I know how to treat my voice to make it sound as good as it possibly can - which is still not that good.
I was mainly influenced by the Carter Family, Jimmie Rodgers, Loretta Lynn, Merle Haggard, and others like Bob Dylan, Johnny Cash.