As a music composer, I have the opportunity to write music for different projects, in different styles which always challenges me to keep creative. When it comes to scoring a film or a documentary, my goal is always to enhance the drama in the scene and to make sure the music moves the audience. I had the pleasure of composing original music for many different projects, each one of them unique and exciting! I am proud to present my showreel.



Hi! My name is Guillaume Basselin. I am a freelance music composer for film, television, media, games, trailers and more.

My adventure with music began at the age of 9 when my parents offered me a keyboard – since that day, there was no stopping me (thanks mum and dad!).

I am now a music composer and producer. I have scored various films and documentary series, as well as having my music featured in different TV shows, music libraries.

You are more than welcome to drop me a line and we can start a musical journey together.



Spitfire Audio has teamed up with A-list composer Pinar Toprak (Captain Marvel, Fortnite, DC’s Krypton), Mad Ghost Productions and DC Entertainment on a brand new competition. Having secured an exclusive clip from season one of the DC Universe series Stargirl, they’re offering the opportunity to reimagine it with an original score, work with top-of-the-line visual material (that includes all dialogue and FX).

This is my original music entry for the 2021 Spitfire Scoring Competition.
I mainly used the library Spitfire Abbey Road One.

Queen Of Toads


An alternative guest house and its remarkable manageress.
The documentary Queen of Toads features an original music score which won an award from the Royal a Society.

Soundtrack available on all major streaming platforms, including Apple Music, Spotify, Amazon Music and Deezer




Last Summer (composer)


Le Poste-frontière (composer)

A l’air libre (composer)

Sigec (composer)



697IA TV (composer: theme tune)

Bonnet (composer: theme tune)


Republic of Chad – The desert of Ennedi (composer)

Audi Quattro (composer)

Domaine André Goichot (composer)

Bonnet (composer)

Vicat (composer)

Suez Station Port Barois (composer)

Nordeon (composer)

Nectars de Bourgogne (composer)

Inicia (composer)


Sonor Street Reporter – Marcheur Blanc – Tomorrow (chorus lyrics & vocal)

Maître Gims – Bella (arranger: epic orchestral – discarded version)

Amel Bent – Dis-moi (arranger: piano/cello – discarded version)

Romain Ughetto – Il Est Parti (arranger: strings)