I Suspect That a Marketing Person Wrote This.

Found on the Berkeley Symphony web site, in their description of tomorrow's program of Mattingly, Ligeti, and Schumann:

In contrast to the rhythmical Piano Concerto, Schumann’s Symphony No. 2 is both passionate and exuberant.

You don't say. Did you notice that "rhythmical" is a word that could be applied to almost every piece of music?