Harmonium was a progressive rock band from Quebec, Canada. 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". The 2 songs were demos at the time and were later recorded professionally to be put on their first album, Harmonium.