From working in the classical and jazz worlds to touring with pop acts, Mathieu is an authentic and versatile virtuoso who makes a difference in any musical project he tackles. His distinctive groove can be heard on over fifty recordings by Canadian artists. He’s also in demand as a composer, arranger, and music producer.

Album disponible

sur toutes les plateformes d’écoute dès le 8 mai 2023.

Achat/Buy : Digital, CD et Vinyl


. . .

Concerts Lancement d’album / Album Launch Concerts :

Montreal, Lion d’Or – Mai 8th, 20h, 25$

1676 Ontario E, Montréal, QC H2L 1S7, Canada



Centennial Theatre

Mai 11th, 20h, gratuit/free.
2600 Rue College, Sherbrooke, QC J1M 1Z7, Canada

. . .

Écouter le premier extrait / Listen to the first track on Apple Music :

> Apple Music

Mathieu Désy’s main corpus of instrumental works for polyphonic bass can be heard and seen in his newly released solo project, Glow In The Dark.

The Glow In The Dark music is available into a book titled Incandescent Songs for the Polyphonic Bass. It offers a series of compositions and arrangements that will allows you to develop polyphonic playing on the double bass.

Bass players can also learn about Mathieu Désy’s evolving technique in his instructional booklet titled Bass vs. Gravity. The work exposes a simple approach to instrumental technique that focuses on the importance of gravity.

This vision led him to develop the polyphonic bass, a unique approach that expands the harmonic capabilities of his instrument. Using a five-string double bass with the high string tuned to D, Désy created a technique where a bass line, chords and melody are played simultaneously.

The book and charts
(A must for any player!)

It explains and vulgarizes the basics of an approach to greater freedom, while encouraging conscious reflection on double bass technique. A must for any player!

Buy and order the physical book

Buy and order digital book

Donwload 2 free charts

The album

To complete the project, you can also heard the full Glow In The dark sessions audio format.

See the Youtube playlist
Listen or buy to the album on :




& Marées

A trio with

Paul Picard (percussion)
and Charles Papasoff (bass clarinet)

Désy’s polyphonic bass can also be heard on his debut album, Contrebasse & marées. The recording features his “aquatic” jazz compositions and arrangements.

Listen or buy to the album on :


+ Other Projects

Mathieu shares his passion for music with the students of the jazz, pop, and classical programs at the Université du Québec à Montréal (UQAM), where he has been teaching since 2009. Recently, he also began teaching at Cégep de Saint-Laurent in Montreal. Thanks to his dedication to the double bass and its technique, he has already helped many aspiring musicians in their journey.

As a producer, Mathieu Désy most recently worked on Martin Lizotte’s album Ubiquité, on which he also played double bass in a duo with the pianist. In 2018, the album received the ADISQ and GAMIQ awards for Instrumental Album of the Year, while also earning Mathieu an ADISQ nomination for Producer of the Year.

He also shares the stage with a lot of Montreal’s artist. Here are a few of his collaborations:

Martin Lizotte

Producer of his two first albums, he also plays on his last release “Ubiquité”.


Desy double bass is now supporting the poetic music of Jorane on her international tour.

Ingrid Saint-Pierre

Touring her last released album Petite Plage into’s Quebec scenes.

Théâtre Jean Duceppe

As a composer, he is currently working on his second score for a play at Théâtre Jean Duceppe presented at Montreal’s Place des Arts in September.

L'Université du Québec à Montréal (UQAM)

Mathieu shares his passion for music with the students of the jazz, pop, and classical programs at the Université du Québec à Montréal (UQAM).

Cirque du soleil

For their special event celebrating the 30 years of the Cirque du soleil in music, the circus related on Mathieu’s talent to magnify their songs.
Voir vidéo sur youtube

Martin Léon:

When in full band, Martin ask Mathieu to play the groove on his music. Every evening is a celebration!

Charles Papasoff

Playing on the Papasoff’s project Darkly Bright, Conversations with Shakespeare.

+ Up next

ISB Convention - Glow In The Dark, Polyphonic Solos
Wednesday, June 5, 2019 3:00 PM