By the time of his death in 2006, Hungarian musical artist Gyorgy Ligeti is recognized as one of the most important avant-garde composers of the 20th century. Made famous for his use of rapidly moving cluster chords and masses of sound that were absent of any traditional melody, the Transylvanian-born progressive grew to mainstream fame when his works became a favorite with filmmaker Stanley Kubrick, who used a number of his pieces in “2001: A Space Odyssey,” “The Shining” and “Eyes Wide Shut.” The Richmond Public Library welcomes Virginia Commonwealth University's Sonia Vlahecevic for a lecture and recital of Ligeti's “Musica Ricercata,” a unique set of 11 pieces for piano that begins with a single pitch, progressively adding a new note each movement until the all 12 of the chromatic scale are used. The concert is scheduled for Saturday, Feb. 12, at 2 p.m. Free.