With his five Nocturnes, Satie put in 1919 an end point to the series of collections for piano which form, so to speak, the backbone of his work.
From his model, the eponymous pieces of John Field and Frederic Chopin, he took on the romantic and dreamy character, the tripartite form and the cradling movement.
On the other hand, the harmony is quite personal and proceeds from a system he had imagined himself. Satie said of her Nocturnes: "It's another expression of me".
Indeed, these easy-to-play pieces take on an unusually serious tone, far from the parodic, absurd, or cabaret aspect that characterizes much of his work.