by David Amram. Macmillan, $6.95. Mr. Amram is a composer of energy and reputation, with a history ot far-flung, selfchosen Bohemian adventure. He has written his autobiography at the age of thirty-eight, demonstrating that his power of recall is either marvelously total or totally uninhibited and also demonstrating that to those not present at the scene, one jam session is very like another.