Séchan wrote lyrics for many singers, including Julien Clerc, Daniel Lavoie, Les Chats Sauvages, Dan Bigras, and others.

[2] His lyrics were very popular in Quebec, and won an award from Society of Composers, Authors and Music Publishers of Canada (SOCAN).

He was a great fan of Leonard Cohen and Étienne Roda-Gil, and wrote pieces on two of the artists' albums.

In 1990, Séchan was one of 250 people to sign Ras L'Front's charter, a document against the far-right National Rally.

For example, he had written columns on far-right news sources and declared his admiration for Philippe de Villiers.