El Niño will mark the Met debuts for three of contemporary opera’s fiercest champions: Marin Alsop, one of the great conductors of our time, who has led more than 200 new-music premieres; soprano Julia Bullock, a leading voice on and off stage; and pathbreaking bass-baritone Davóne Tines. The music combines the traditional elements of Baroque and Classical oratorios with Adams’ signature minimalist and post-minimalist style, and has been dubbed “The Messiah for a New Millennium.”