Born in 1965.
He began his musical studies by learning the trumpet at the age of 9. When he was 13, he made his first steps as a composer and started playing the keyboards.
In 1981, he obtained the First Prize in Music Theory at the National Music School in Paris.
He met Jacques Hélian's brother, Georges, and learned from him the art of musical harmony and writing. At the same time, he was discovering music assisted by computer at its beginning.

He became a Sacem member at the age of 20, succeeded at the music arranger exam, and wrote more than 200 titles during the next 5 years.
He met Anne Lize, a young French singing and swinging lady, who was to become his wife. She took him around the world during 15 years.
Alain Weiller was signed by Universal Publishing in 1997.

In 2000, he wrote a musical fairy tale that was performed during a month in Tokyo.

In 2001, he created his own music studios in Boulogne Billancourt (France) where he composes commercials (Chanel, Talika), songs ( J. Hallyday), TV music (Ouf le Prof). He has been remixing in 5.1 some of the best cult movies such as "Dune"(David Linch), "Point Break" (Katheryn Bigelow), "Phantom of the Paradise"(Brian de Palma), " Les Maîtres du temps" (Time Masters - René Laloux), "Stones in the Park " (the mythical concert in 69) and also mixed the music for René Aubry’s feature film "Malabar Princess".