Mathieu Baillargeon began learning classical piano at the age of three. Introduced to traditional music in 2015, he began training in accompaniment with Rachel Aucoin, then discovered the diatonic accordion with Sabin Jacques. In 2017, Mathieu performed for the first of many times at the Carrefour mondial de l'accordéon. He subsequently collaborated with numerous artists (FLIP Fabrique, Les Chauffeurs à pied, etc.) on concerts, dance evenings and other events across the province. In 2018, he co-founded La Déferlance and joined the board of Maréemusique. He also began teaching piano and accordion on a regular basis. Since then, Mathieu has also taught at events in Canada and the United States (de Souches à Oreilles, Ashokan Northern Week, Danse-Neige, etc.). In addition to his musical pursuits, Mathieu holds a master's degree in statistics and is responsible for survey methodology at the Institut de la statistique du Québec.

Marie-Desneiges Hamel began learning the accordion at the age of seven with Suzie Gagnon (Cirque du Soleil). As an adult, she honed her skills with numerous instructors, including Sabin Jacques, Denis Pépin, Yves Hélie and Normand Miron. While working as an educational consultant at Université Laval, she performed on stage with Simon-Charles Cyr, Rachel Aucoin and Gaëtan Lefebvre, among others. She has performed at Carrefour mondial de l'accordéon, Festival celtique de Québec, Rendez-vous ès Trad, Carnaval de Québec and Printemps de la musique. In 2014, she had the privilege of presenting the inaugural concert for Salle Jean-Marie-Roy, in St-Augustin-de-Desmaures. In 2015 and 2016, she toured with Noël à l'accordéon, c'est pas juste des rigodons. Since 2018, the accordionist has devoted herself primarily to La Déferlance, but continues to accumulate experience in musical animation and teaching (École de musique Denys-Arcand, Danse-Neige, de Souches à Oreilles, etc.).

Grégoire began playing music at the age of 3, and had his first violin in his hands at the age of 4. He studied violin and piano at the Conservatoire de Musique de Québec from 1986 to 1997. Over the years, he added several self-taught strings to his bow, including guitar, mandolin and bass. At the age of 14, Adélard Thomassin, a famous Quebec City accordionist, introduced him to traditional music and put him in contact with other talented musicians from the region, such as Denis Maheux and Jean-Yves Hamel. He went on to perform with various ensembles on several trips to Europe, the United States and across Canada. In his professional career, he has accompanied many artists on a regular basis, including Patrick Groulx (with whom he won the Félix award for Country Album of the Year in 2010), Nathalie Choquette, Étienne Drapeau and a host of other showbiz names on an ad hoc basis. Since 1998, Grégoire has also been a member of the Irish music group Rosheen, of which he is musical director.
 

Renaud holds a bachelor's degree in music from Université Laval, and studied double bass with Zbigniew Borowicz, Michel Donato and Norman Lachapelle. For ten years, he worked on prestigious cruise ships as bassist and double bassist for the resident jazz orchestra. On the Queen Mary II and Freedom Of The Seas, he played to 6,000 people daily for several months, and was musical director on the MS Journey, with 30 experienced musicians under his tutelage. He has played in some of the biggest concert halls in the Quebec City region (Grand Théâtre, Capitole, Salle Albert-Rousseau, Palais Montcalm, etc.) and participated in many concerts with Karen Young, Alain Trudel, Orchestre symphonique de Québec, Orchestre symphonique de l'Estuaire and Les Violons du Roy. On the trad scene, Renaud has performed alongside numerous musicians (Normand Legault, Sabin Jacques, the Painchaud family, Denis Maheux, etc.). He has also accompanied the Quebec folk dance troupe Les Éclusiers de Lachine on tours of France, Croatia and Mexico.