The piece played before the start of class was Nikolai Rimsky-Korsakov, Scheherazade, Op. 35, IV. Festival at Baghdad (1888): 

 

Other music played in class, listed alphabetically by composer:

 

Brass mutes demonstration

 

String mutes demonstration

 

Anonymous, Royal Mehter Band, Istanbul

 

Ludwig van Beethoven, Symphony No. 3 in E-flat Major “Eroica”, I. Allegro con brio (1803) — opening chords performed by several orchestras

 

Hector Berlioz, An Episode in the Life of an Artist, in Five Parts: Symphonie fantastique, Op. 14 (1830)

Idée fixe that appears in all movements: 

IV. March to the Scaffold: 

 

Joseph Haydn, Symphony No. 100 “Military”, II. Allegretto (1794)

 

Sultan Murad IV, Uzzâl peşrev (1612)

 

Gustav Mahler, Symphony No. 5 (1901-2)

 

Wolfgang Amadeus Mozart, Piano Sonata No. 11 in A Major, K.331, III. Alla turca—Allegretto (1784)