Alan Gilbert reigned over the New York Philharmonic tonight for the first time as music director. Hosted by actor Alec Baldwin, the televised broadcast “Live from Lincoln Center” allowed millions to watch not only the NY Phil’s opening night, but its venture into a new era of leadership. Gilbert is not only the youngest-appointed music director, but also the first native New Yorker to hold the position.

The program began with the world premier of EXPO by Magnus Lindberg, the Phil’s composer-in-residence until 2011. Lindberg wrote the work knowing it would open the milestone season—the Phil’s 50th at Avery Fisher Hall.

EXPO was followed by Songs pour Mi—a song cycle by Olivier Messiaen. Sung by Renée Fleming, the song cycle is a portrait of Messiaen’s love for his wife, Claire Delbos, who he nicknamed Mi. Those watching the televised broadcast saw Fleming introduce the cycle with a pre-recorded speech, which outlined Messiaen’s relationship from his marriage to Delbos at 27 years old, to her institutionalization due to mental illness after the end of World War II.

Finally, the headlining work of the night was Symphony No. 1—or the Fantastic Symphony—by Hector Berlioz. Written only three years after Beethoven’s death, the work facilitated the exodus into Romanticism, as it’s massive orchestration and lush expression brought unrestricted emotive composition into the musical world. The work is programmatic—that is, it possesses a narrative—with notes written by Berlioz himself. Each of the five movements has a descriptive title, including the famous March to the Scaffold and Dream of a Witch’s Sabbath. As described by Berlioz, the piece tells the story of “an artist gifted with a lively imagination” who has “poisoned himself with opium” in the “depths of despair” out of “hopeless love.”