Pietro Alessandro Guglielmi was an Italian composer of the Classical period, born in Massa, Tuscany, and active successively in Naples, Dresden, London, and finally Rome, where he became maestro di cappella at St. Peter’s Basilica in 1793 and remained until his death. A prolific composer, he specialized chiefly in comic opera (dramma giocoso and commedia per musica), with lesser success in serious opera, and also wrote oratorios and chamber music. He died in Rome in 1804 at age 75.

Guglielmi achieved considerable international fame in his day, particularly in England and Germany, and his comic operas were noted for a natural wit and gaiety comparable to that of Domenico Cimarosa. Despite his enormous productivity, his star faded as younger composers rose to prominence, and he is remembered today chiefly as a representative figure of the late-18th-century Italian comic-opera tradition and as the father of composer Pietro Carlo Guglielmi.

Sources:

• https://en.wikipedia.org/wiki/Pietro_Alessandro_Guglielmi