Brahms was the anti-Wagner in many ways: conservative and retrospective, deeply influenced by baroque and classical music, he never wrote an opera but was prolific in many other forms, including vocal, piano, orchestral, and chamber music.
PRINT the questionnaire and fill it out as you LISTEN to Brahms's Haydn Variations in the version for orchestra.
Here are clips of some of the instruments named in the questionnaire: Horn Oboe Timpani Triangle
Variations on a theme of Haydn, Op. 56 (19'02)
played by the New York Philharmonic conducted by Kurt Masur
PS: If you liked the Ride of the Valkyries, you'll love this Wagner pastiche in which it figures.