Albert Paul Alain (1 March 1880 – 15 October 1971[1]) was a 20th-century French organist and composer.
He pursued counterpoint studies with Georges Caussade, fugue and music composition with Charles Lenepveu and Gabriel Fauré, at the same time as he worked on the organ with Guilmant and Louis Vierne.
In 1924, succeeding Albert Renaud, he became organist of the church of Saint-Germain-en-Laye, a position he held until his death.
Passionate about organ building, he built over the years (1911–1970) an instrument with 4 keyboards and 43 stops in his house.
He married Magdeleine Alberty in 1910, and they became parents of four children with exceptional gifts: Jehan (1911-1940), Marie-Odile (1914-1937), Olivier (1918-1994) and Marie-Claire (1926–2013).