I was particularly intrigued by the Hindemith piece in Megan's presentation. For a Hindemith piece, it was surprisingly tonal and accessible to the listener. That being said, as Megan mentioned, it did use quite a few rhythmic techniques, which is common with 20th century music. Just to name a few I heard upon the first listening, irregular rhythmic groupings, mixed meter, polymeter, polyrhythm, ostinatos and simultaneous speeds.
It was also interesting to hear the Canzona Bergamasca with a bass trombone instead of a tuba. The other piece that piqued my interest was the Carlos Chavez Soli I for Brass Trio. I found it interesting that the tempos were specified, yet the tempo could not be interpreted from the music presented. I am also curious if he used any twelve tone techniques or cell theory.