Michaela Turcerová’s compositions unfold in slow motion. The saxophonist and composer’s glacial music zeroes in on the granularities of each note as it rings, soaking in every subtle shift in texture and pitch.

Šumum exemplifies this patient approach to writing music, branching out from themes of loss and togetherness into an intricate tapestry of introspective sound. These four pieces invite deep collaboration between performers, who together shape the music through the shared process of listening and interpreting Turcerová’s relatively open scores. And while these works often grow from long, stretched-out tones, they also foreground forward direction: no note stays in one place, no melody is without action. Instead, Šumum chronicles how the tiniest shifts can lead to major transformation.

Šumum builds from Turcerová’s longheld interests in place and minimalism. Many of the composer’s works explore perception: how a room can shape the music we hear, and how repetition alters a melody. Like the music of Éliane Radigue, Šumum embraces the rainbow of colors that appear when close listening with the wave-like flow of looped melodic and rhythmic patterns. All the album’s pieces observe the subtle changes that happen as music grows.

Group communication yields the constant evolution that defines Šumum. The album feels like a conversation, with each instrumentalist swapping phrases or trading places when the moment feels right. “Straty” builds from a series of strongly accented drones that appear as quickly as they fade away; underneath them is a perpetual rhythm that drives the color of each long held note, from melancholy into radiance and back again. With “Vlny,” pitch eventually disappears, leaving a delicate rhythm, and with “Masy,” a matrix of brassy tones link together and eventually burst. No matter where the music goes, one thing remains true: Šumum invites close listening, and in the process, reveals the beauty of continual motion.