Evald Aav(1900-1939), Estonian composer, he studied at the Tallinn Conservatory, then conducted choir and orchestra in Tallinn. He composed the first Estonian opera "Vikerlased(Viking)", he modeled his style of composition after Tchaikovsky.
Nicanor Sta. Ana Abelardo(1893-1934), Pilipino composer, he studied at the University of Philippines-Conservatory of Music, then later appointed as the head of composition department there. He composed over 100 of Kundiman songs, bringing the genre to the art-song status.
John Aberle(1846-1930), Italian composer, he studied at the Naples Conservatory, held the director of Opera for five years in Naples, traveled to Latin America, settled in El Salvador, established the School of Music, he composed the national anthem of El Salvador. He composed chamber music and made opera transpositions of passages for piano.
Girolamo Abos (1715-1760), Maltese-Italian composer of operas and church music. He was born in Malta, then studied in Naples. In 1756, he became Maestro al Cembalo at the Italian Theater in London. In 1758 he returned to Italy and taught at the Conservatorio della Pieta de Turchini in Naples. He wrote 14 operas and good deal of church music.His operas received great successes in Naples, Rome and London.
Aino Ackte(1876-1944), Finnish soprano, daughter of Lorenz Nikolai Achte, baritone and conductor and Emmy Achte, soprano. She studied with her mother first, then with Duverney in Paris, debut in Paris Opera, thereafter sang in London, and NY Met. She had a voice of purity and power. She was the director of Finnish National Opera, 1938.
Adolphe Adam (1803-1856), French composer, he studied at the Paris Conservatory, won 2nd prize in the Prix de Rome, he was professor at the Paris Conservatory until his death. He composed over 50 comic operas and ballet music, the Ballet "Giselle" is the most popular among his works.