Love the woodwind writing here and how he weaves in the Wedding March quotation. This plus his arrangement of Wagner's Flying Dutchman overture are just great displays of Hindemith's sense of humor. He must've been a great guy to be around.
This concerto is delightful. The 2nd movement in particular is so ingenious with the extensive use of canon and imitation. The B section (8:47) is also quite lovely; you rarely get to hear these four instruments play in unison.