The poet-composer Henri Dallier (“on-REE dahl-YAY”) wrote a set of five “invocations” for this instrument. In the middle of a recital of his own music, a blind composer reportedly died while sustaining a low E on this instrument. Constant (10[1])triple-forte sixteenth notes in 4/2 (“four-two”) time fill the oft-excerpted Toccata finale of the fifth in a set of works for this instrument. Midway through the second movement of one symphony, after a grand pause from the orchestra, this instrument enters with a loud C major chord to open a (10[2])Maestoso fourth section. Louis Vierne (“vee-AIRN”) assisted Charles-Marie Widor in his class on this instrument, (10[1])which is unusually featured in the third symphony of Camille Saint-Saëns. For 10 points, name this instrument that traditionally plays recessional music in a church. ■END■ (10[2])