Hartke's cello concerto, Da Pacem, takes its title from a Latin hymn that begins Grant peace in our day. It is a reflection on these unsettled and unsettling times. As the work's protagonist, the solo cellist journeys through a considerable variety of musical landscapes. Movements: I. Da Pacem (Fantasia) II. In diebus nostris (Scherzo) III. Quis pugnat pro nobis? (Introduction, Elegy, and Envoi) Commissioned by Oberlin College and Conservatory; the Saint Paul Chamber Orchestra; the Aspen Music Festival, Robert Spano, Music Director; and American Composers Orchestra.