Bultheel’s work as an experimental composer and performance artist bridges contemporary composition with techniques and traditions of European Medieval and Renaissance polyphonic music. His music explores performance and installations, often site-specific, leaving the constraints of the concert hall behind in order to find new territory for musical experiences. The musicians become performers, moving through sound tropes, interacting with architecture, sculpture and custom-made instruments. Amongst his works are ‘The Thief’s Journal’ for Atonal (Berlin 2023), ‘Workers in Song’ in collaboration with the artist James Richards at Wiels (Brussels 2023), Mt. Analogue at Bourse de Commerce - Pinault Collection (Paris, 2023), ‘Athens Songs I-IV’ at the 7th Athens Biennial (Athens 2021), UNTER in collaboration with Tanya Viviana Abelson for the Schinkel Pavilion (Berlin 2021), ‘Songs for the Contract’ (folia.app 2021), ‘The Minutes of Olomouc’ at PAF (Olomouc, CZ 2020), ‘When Doves Cry' at the Schinkel Pavillon (Berlin, 2019). In 2020 Bultheel formed the band 33 with Alexander Iezzi. The duo has released their first album ’33-69’ on the London/Berlin-based record label C.A.N.V.A.S. in September 2021. The band is modular in nature and has included appearances by musicians Ivan Cheng, Patrick Belaga, NAKED, Steve Katona, CEM, amongst others. They have toured across Europe and are currently working on a second studio release. In 2012 he started his collaboration with the German performance artist Anne Imhof, working as a performer and composer in Imhof's early performances, movies and installation. He composed music for Imhof's exhibition-as-opera Angst (2016), Faust (2017) and Sex (2019) alongside with Eliza Douglas and Anne Imhof. The music for Faust and Sex have been released on LP on the German record label, PAN. Furthermore Bultheel has composed music for choreographers Adam Linder, Enad Marouf, Michele Rizzo and for the Satire IXNEYTAI/TRACKERS by Sophocles, directed by Michail Marmarinos, which was presented at the ancient amphitheatre of Epidavros, Greece. Bultheel studied composition at the Institute of Sonology in The Hague, Holland and performance and choreography at the Institute for applied theatre science, Gießen, Germany.