(un)certainty (2024) by Lawton Hall and Figure to Ground by Andrea Mazzariello are two pieces that will be performed in this concert, each offering a unique exploration of rhythm and complexity. (un)certainty, scored for solo marimba and electronics, delves into the tension between surety and doubt, inspired by advances in particle physics. Its five movements range from bold, frantic chords to quiet reflection, culminating in a rhythmic battle between marimba and electronics. Figure to Ground, written for Abby Fisher, simplifies rhythmic complexity into a single syncopated figure, gradually dissolving the pulse until a late melody reasserts it. Both pieces demand courageous performances, inviting listeners into deep contemplation of time and structure.