Italian Vacation 14.

To say Aldo Clementi uses canons, is like saying Wagner wrote operas or that Beethoven was good at variations.

Operatic Rarities Highlight Early Summer in N.Y.

Rare and rarer best describes a trio of operas performed in June and July in three New York venues. They may never win great popularity — not a Bohème among them — but they provided three evenings of great music strikingly performed.