Canto Ostinato is a composition by Dutch composer Simeon ten Holt, written between 1973 and 1976. Initially titled Perpetuum, it was renamed shortly before its premiere in 1979. Known for its variable length and repetitive structure, the piece allows for flexibility in its performance, with variations in length and instrumental arrangement. The work, which has been performed by various musicians over the years, offers a unique experience with each rendition. Jeroen and Sandra van Veen's performance brings their deep understanding of Ten Holt’s principles to life, delivering an immersive and evolving experience that highlights both the beauty of repetition and the creativity in its execution.