Of Ottorino Respighi's vast output, only a handful are commonly played today. The so-called "Roman Trilogy" certainly tops the list of his most familiar, popular works. On the other end of the continuum is the Concerto in modo misolidio, a piano concerto in the mixolydian mode. Why this riveting work is not played more often is anyone's guess. It incorporates Respighi's innate talents as a master orchestrator, his deference to classical forms (in this case, the three-movement concerto format), and his love of ancient music and modes.