As a solo recitalist, concerto soloist, and chamber musician, pianist Oliver Triendl has specialized in little-known repertory, most of it from the German-speaking sphere. Triendl made his recording debut in 1992, joining the Czech State Philharmonic Orchestra on an album that included Schumann's Piano Concerto in A minor, Op. 54, and Rachmaninov's Piano Concerto in C minor, Op. 18. Triendl then recorded the Chopin and Ravel concertos in 1994. In 1996, he released an album of piano works by Harald Genzmer, and since then, he has devoted almost all of his recording career to the revival of music by neglected composers. His efforts to record little-known material have been untiring. He appeared on seven recordings in 2022 and six in 2023 despite pandemic-era recording difficulties, and by the mid-2020s, his catalog comprised more than 100 items.