The compact disc literally has become an overnight success, passing a speed test at a classical solo piano concert by Michael Ponti at the Newport Music Festival in Rhode Island.

The Newport Classic CD label recorded the July 22 concert, edited the master tape backstage, and rushed it by car to Sanford, where workers at Shape Optimedia were waiting to begin the elaborate transfer process to the laser-scanned discs.Fifteen hours and 17 minutes after the performance ended, the first discs rolled off the assembly line. Two hundred discs were driven to Newport in time for sale at the July 23 concert. Another 300 were shipped to Tower Records in Boston.

Shape President Paul Gelardi said the firm's innovations in CD technology allows it to make and package three discs per minute.