Luigi Alva, the Peruvian tenor who was a pre-eminent interpreter of Mozart and Rossini roles that highlighted his light-lyric voice, elegant phrasing and subtle acting during a three-decade career on the world’s opera stages, died on Thursday at his home in Barlassina, Italy, north of Milan. He was 98.

His death was confirmed by the Peruvian tenor Ernesto Palacio, a close friend and the intendant of the Rossini Opera Festival in Pesaro, Italy.

Mr. Alva did not have the booming, resonant voice needed for dramatic tenor performances in the biggest opera houses. But he triumphed in opera buffa roles — such as Count Almaviva in Rossini’s “The Barber of Seville” and the lovesick Ernesto in Donizetti’s “Don Pasquale” — which demanded fine comedic timing and an appreciation for absurd situations without resorting to slapstick or mugging.

In more serious roles, such as Don Ottavio in Mozart’s “Don Giovanni,” Mr. Alva displayed a warm timbre and gracious line that gained him an enthusiastic following. Few tenors could match his ability to deliver long coloratura passages with a single breath, as Mr. Alva did time and again in “Il mio tesoro,” the famous aria from “Don Giovanni.”

“The real trick is not merely to sing the passage, but to make it sound easy,” the critic Alan Rich of The New York Times wrote on the occasion of Mr. Alva’s New York recital debut at Judson Hall in 1961. “And this was the way he sang throughout the evening — beautifully, and with an assurance that was literally breathtaking.”

In more serious roles, such as Don Ottavio in “Don Giovanni,” Mr. Alva displayed a warm timbre and gracious line that gained him an enthusiastic following. Here he performed the role in 1963 at La Scala. Credit…Erio Piccagliani/Teatro alla Scala