“Pentasm” adds variety to the series with its 5/8 meter. Tension and anxiety drive the music, with close hocket-y interplay between the parts. Slurs are real slurs, especially in mm. 58-65, moving just the fingers with a steady breath. Unlike those of the Canonic Sonata, the grace notes throughout “Pentasm” are little flicks before the beat. At the unison 3/4 ending, the eighth-notes retain their value; there are simply six of them now instead of five.