Trio, his compositions focus on the intentionality of expression, honesty, and authenticity through pellucid, lyrical melodies and fierce grooves that straddle through-composition and improvisation, drawing inspiration from the deeply emotive music of John Coltrane and Tigran Hamasyan. His current creative outlet exists in quartet and quintet form as the Aedos Quartet.

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In 2025 he hosted sold out shows at Next Door Records, Oxford House, and the Chelsea Physic Garden, before re-forming the project as the Aedos Quartet in 2026. He was also one of ten musicians from London conservatoires selected to be part of the London Transport Museum’s 2025 “Transported by Culture” programme.​​

Oskar is a first-class 2025 graduate of the prestigious Guildhall School of Music and Drama’s Jazz Performance Masters, where he spent two years honing his saxophone and improvisational skills under the guidance of leading UK jazz musicians and composers Trish Clowes, Jean Toussaint, Iain Ballamy, and Mark Lockheart, among others, and for which he was a receiver of the 2024 Help Musicians Postgraduate Award.

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As a composer he has been commisioned work for BBC Radio 4, including for the documentary "The Lowball Tapes" in 2022, and was a receiver of the Andrew Grant Bequest Prize for Portfolio of Compositions from The Reid School of Music at The University of Edinburgh in 2023, where he graduated with a first-class with honours degree, as well being awarded the Bucher-Fraser Scholarship and Reid School of Music Recognition award.

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Additionally, he frequently works in collaboration with artist Caroline Areskog Jones, producing scores and soundscapes for video works and installations that explore a range of sensitive, subtle narratives and spatial relationships. In 2020 'Sounding Line' was screened internationally at the Nature & Culture – International Poetry Film Festival Copenhagen, The World of Light Exhibition Auckland and the Montreal International Film Festival.