For those of you that like the music in Sang-Froid, Here is a link to a post by the developers (in Steam). I will copy the essential below for convenience.

AFAIK, they are all Canadian Québéquois musicians, as fits the setting of the game. Worth checking.

https://steamcommunity.com/app/227220/discussions/0/846945955412539900/

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Did you like the music in our game?

A lot of people have asked us to list the Soundtrack, so here's the complete list for you all!

SOUNDTRACK:
(in alphabetical order)

LES CHARBONNIERS DE L'ENFER & LA NEF
http://www.lescharbonniersdelenfer.com, http://www.la-nef.com
Song: Reel à bouche,
Album: La traverse miraculeuse

DOMINO
Song: La valse des cerfs-volants (composed by Mario Loiselle)
Album: Pris au jeu

NICOLAS PELLERIN
http://www.nicolaspellerin.com
Songs: Beauclair / Boubou / Têtes de violons
Album: Nicolas Pellerin et les Grands Hurleurs

PERDU L'NORD
http://www.genticorum.com
Songs: Le petit docteur / Polska d'la rue Bordeau / Tribu nordique
Album: Moulin

LA VOLÉE D'CASTORS
http://www.vdc.qc.ca
Song : 8e côte
Album: VDC
More songs: Les deux vendredis / Par monts et par vaux
Album: Par monts et par vaux

MARIO LOISELLE ET DOMINO
http://www.amazon.com/La-valse-des-cerfs-volants/dp/B00FWB5TAI
http://www.richardforest.com/ (member of Domino)
Song : La valse des cerfs-volants

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The music for this game can be found in the game's media folder. Most are in WAV format, but a few are WMV files. After going through things, these are the actual music files:

combat_8Cote_part_1
combat_8Cote_part_2
combat_docteur
combat_mont_et_par_vaux
combat_nordique
combat_vendredi
intro_realbouche
loadingDone
loadingMusic_01
loadingMusic_02
loadingMusic_03
loadingMusic_04
Mus_Chap_Bordeau
Mus_Chap_Nordique
musicDead
musicWin
musique_ermite
Musique_Main_Menu
Musique_mont_et_par_vaux_tension
Musique_Village
PPP_Song_1
ReelaBouche
RichardForest

Anything with EN or FR at/near the end of the filename is a dialogue track.
All other WAV format files are sound effects.