Mariusz Duda, born 25 September 1975 in Węgorzewo, Poland, is a Polish singer, bassist, composer, and multi-instrumentalist. In 2001, he co-founded the progressive rock band Riverside, serving as its lead vocalist, bassist, and principal songwriter until his departure in 2026. In 2008, Duda established Lunatic Soul, a solo project through which he released albums including Lunatic Soul (2008), Walking on a Flashlight Beam (2014), Fractured (2017), and Through Shaded Woods (2020). He also collaborated with Maciej Meller and Maciej Gołyźniak as Meller Gołyźniak Duda, releasing Breaking Habits in 2016. Beginning with Lockdown Spaces (2020), Duda developed a separate solo catalog under his own name focused primarily on electronic music, followed by Claustrophobic Universe (2021), Interior Drawings (2021), Let’s Meet Outside (2022), and AFR AI D (2023). Following his departure from Riverside in 2026, he continued his work with Lunatic Soul and his solo recordings.
