The double inauguration of the forty-first edition of Romaeuropa Festival features one of the most relevant figures in contemporary Italian music. Caterina Barbieri returns to REF with a new collaboration with ONCEIM – Orchestra for the Creation, Experimentation and Improvisation of Music. Commissioned by the Philharmonie de Paris, she presents the Italian premiere of Non puoi contare l’infinito, a new composition for orchestra, electronics and voices, followed by a solo concert of unreleased pieces featuring some ONCEIM musicians on voices and brass. The composition is structured in two acts: Bruma, for orchestra, three voices and electronics, and the concluding Non puoi contare l’infinito, for strings, brass and voice, from which the work takes its title. Artistic director of the Venice Biennale Musica and one of the most internationally acclaimed Italian composers, Barbieri explores states of trance and altered consciousness through her music, moving between theoretical rigor and emotional intensity. Her compositions take shape as living organisms, transforming throughout the course of live performance. Led by Frédéric Blondy, ONCEIM – an orchestra of over thirty musicians from diverse musical backgrounds – opens the evening with Constellation by Christian Marclay, Golden Lion winner at the Venice Biennale: a visual and open score in which each performance emerges from collective listening and improvisation.