Michael Dilthey's newly composed accordion solo

Michael Dilthey just finished writing an accordion solo "Sonata for solo accordion".   You can listen to a recording on youtube:  https://www.youtube.com/watch?v=l8eCB6S5Fig

Michael Dilthey received a doctorate in music composition from Northwestern University.  He heads the music department at Massachusetts College of Liberal Arts in North Adams, MA.

I met him in 2014 when my trio gave a performance at his school.  I asked him to write a solo last year, and he wrote this sonata.  I like it.