Don't expect a trustworthy account, though. One reason to write memoirs is to tell your side of the story, and Da Ponte spends a lot of time settling scores. As a businessman, he's involved with a procession of false friends, who sink him with debts and slanders. At the Italian Opera in London, on the way to being forced out of another position, he juggles the egos of two rapacious divas: "The Lord help you if Morichelli gets a better reception in Martini's opera than I do in mine!" says one. His philosophy grows bitter--"I trusted in him blindly and was, as usual, barbarously tricked by him"--yet he always has another idea for making cash and, in later years, spreading the gospel of Italian literature in the New World.

Da Ponte doesn't interrupt his tale to ask probing questions. The most important period, his association with Mozart, passes with disappointing brevity. Though he salutes the composer's genius, he offers no insights into Mozart's personality or their collaboration. Da Ponte was busy at the time, however. He says he wrote Don Giovanni simultaneously with two other librettos: one in the morning, one in the afternoon, one at night.

This annotated version is a little short on notes. Da Ponte's many phrases in Latin and the untranslated Italian expressions could use some commentary. The notes do inform us when the author is mixing up his facts, which is fairly often. The 1929 translation by Elisabeth Abbott, blending 18th-century elegance with 20th-century crispness, has previously been available only in an expensive hardcover edition. This paperback is part of the New York Review of Books Classics imprint, an invaluable series that republishes worthy but hard-to-get titles. Da Ponte's book fills the bill admirably. --David Olivenbaum