Gluck Gluck Ballet Suite no. 1 The Ballet Suite No. 1 includes selections from three of Gluck's greatest stage works. It begins with an Air Gai and Lento from Iphigenia in Aulis. Familiar music, taken from Gluck’s most frequently performed and famous opera Orfeo ed Euridice, follows the initial movement. This well-known music is arranged in a three-part form in which the graceful Dance of the Blessed Spirits, coupled with the eternally beautiful interlude for solo flute, one of the most poignant and memorable of all of Gluck’s melodies, becomes the centerpiece of the suite. The suite concludes with two excerpts from the opera Armide, a Musette and a Sicilienne.