Savage Sinusoid

 ( Metal Blade Records Albums ) 

Unlike previous albums, the album did not feature any samples. Travis Ryan from the band Cattle Decapitation guests on three tracks.

Serre cited Taraf de Haïdouks, Cannibal Corpse and Aphex Twin as inspiration for the album.

Metal Injection, as well as giving it a perfect 10/10 score, named it the "Batshit Crazy Album of the Year". They concluded in their review, "Igorrr is a project with no boundaries, and the personal belief of creating the art one wants to. In a world where we argue from the mainstream radio to the underground scene, Igorrr is a breath of fresh air. Savage Sinusoid isn’t just a breath of fresh air in musical technicality and emotion though, but an excellent reminder to just enjoy music." Additionally, they ranked the album 9th on their year end rankings of every album.

Allmusic stated "Serre's fusion of acoustic and electronic instruments is tighter and more refined than ever, and while Savage Sinusoid sounds unmistakably like an Igorrr album, he hasn't come close to sounding predictable yet."

Dom Lawson of Metal Hammer wrote, "Igorrr exist in a world where borders between genres are non-existent and anything is possible, albeit with a preference for being wildly unpredictable", and saw "much subtlety offsetting the shifts of pace and mood and some spellbinding moments of serene but subversive finesse", concluding: "If only more metal records were this barmy."

• Gautier Serre – music, guitar, piano, electronics, recording, mixing, mastering

• Laurent Lunoir – vocals (1–4, 6–8, 10)
• Laure Le Prunenec – soprano (2–8, 10, 11)
• Sylvain Bouvier – drums (1–4, 6–11)
• Katerina Chrobokova – harpsichord (2, 4, 8, 9)
• Erlend Caspersen – bass (2–4, 7–11)
• Travis Ryan – vocals (7, 8, 10)
• Morten Iversen – guitar (1), bass (1)
• Benjamin Violet – strings (4–7, 11)
• Pierre Mussi – accordion (3, 7)
• Antony Miranda – sitar (4), additional drums (4), surf guitar (2)
• Nils Cheville – classical guitar (3, 4, 6, 11), santoor (4)
• Yann Le Glaz – saxophone (3, 10)
• Benjamin Bardiaux – piano (11)
• Nicolas Seguin – piano (11)
• Adam Stacey – accordion (3)
• Pedrou Lacasa – mandolin (7), balkan vocals (7)
• Yasmina Barra – balkan vocals (7)
• Stuart Dickson – percussion (3)
• Aymeric Thomas – 8 bit sounds (3)
• Patrick – chicken (3)

• Hervé Faivre – recording
• Metastazis – artwork

• Savage Sinusoid on Youtube (streamed copy where licensed)