ASPEN – After a year’s absence, the Aspen Music Festival’s Winter Music series returns Wednesday with a performance by a group billed as Curtis on Tour. The ensemble features musicians from Philadelphia’s Curtis Institute of Music, led by violist Roberto Diaz, the school’s president, and guitarist Jason Vieaux, a member of the faculty. Two students from the string department, violinist Nadir Khashimov and cellist Eric Han, round out the quartet.

The program includes Paganini’s Quartet No. 15 for violin, viola, cello and guitar, a work for strings and guitar by Zhou Tian, the Kodaly Duo for Violin and Cello, and an arrangement of Piazzolla’s “Oblivion.”

The series continues March 15, with pianist Yefim Bronfman performing a program of works by Haydn, Brahms and Prokofiev, and concludes March 30 with pianist Jonathan Biss playing a program that includes three Beethoven sonatas, including the “Moonlight” sonata, and works by Janacek and David Ludwig.

All Winter Music concerts are at Harris Hall and begin at 6:30 p.m. For further information, call 970-925-9042 or go to aspenmusicfestival.com.