Complex sentence: His first full-length opera, "The Consul", which premiered in 1950, won both the Pulitzer Prize for Music and the New York Drama Critics' Circle Award for Musical Play of the Year (the latter in 1954).
Split into simpler sentences: His first full-length opera, "The Consul", was premiered in 1950. It won both the Pulitzer Prize for Music and the New York Drama Critics' Circle Award for Musical Play of the Year (the latter in 1954).