You may be asking yourself what gas has got to do with music, even as you are reading this opening line.
Fortunately, while I do love a mystery, clarity might be good.
Unless you were a working musician circa 1970, you may not know that the wages being payed in what few jazz clubs left today, bear more than a striking resemblance to those paid over forty year ago.
Up until recently, Pre-W, era- at least the wages that you had to spend arriving at said jazz club, remained relatively stable. Henceforth, while general wage increases couldn't be taken into account, you weren't paying more to arrive at said establishment.
We are getting closer to the point where the new phrase will be
"gas- its what's for dinner".