Igorrr is the pseudonym of French multi-instrumentalist and electronic producer Gautier Serre (born 1984) of electronic grindcore project Whourkr. His solo work combines frenetic breakbeats with operatic vocals, metal riffs, gypsy violins, and a multitude of other sounds, resulting in an intense, disturbing, and undeniably distinct experience. The unique blend of meticulous drum programming and acoustic instrumentation on his self-released demos Poisson Soluble (2006) and Moisissure (2008) garnered attention from Berlin-based experimental label Ad Noiseam, who issued his proper debut Nostril in 2010. Its companion EP, Baroquecore, was also released that year on Aentitainment.

2012 found him expanding further on his use of live instruments on his second proper full-length, Hallelujah, a collection of pieces intended to signal the apocalypse and featuring a myriad of collaborators ranging from Baroque singer Laure Le Prunenec to Mayhem guitarist Teloch. In 2013, a 7” of remixes with ragga junglist Bong-Ra was released on PRSPCT RVLT. It was followed one year later by the Maigre EP on Ad Noiseam, a collaboration with Ruby My Dear. After a few years of silence, Igorrr signed to legendary metal label Metal Blade, which released his full-length, Savage Sinusoid, in 2017. The album was completely devoid of samples, and featured several guest musicians, including members of Cattle Decapitation and Secret Chiefs 3.