Lead vocalist and guitarist Serge Fiori met Michel Normandeau (vocals and guitar) in a theatre music meeting. Later on in 1973 they met bassist Louis Valois and became Harmonium. In November 1973 the group performed their first air play on CHOM-FM. They played 3 tracks: "Pour un instant", "Un musicien parmi tant d'autres", and "Un refrain parmi tant d'autres". The first 2 songs were demos at the time and were later recorded professionally to be put on their first album, Harmonium. The last song was a sequel to "Un musicien parmi tant d'autres", but never made the album cut, staying as a b-side. Apart from the album, one single was recorded at the time: "Pour un instant", featuring 2 tracks (one on each side), the title song and "100,000 Raisons", only released on the CD version of the album almost 20 years later.
