Complex sentence: The American composer David Carlson also wrote an opera, premiered in 2007, based on the Tolstoy's novel; the libretto of his "Anna Karenina" was written by Colin Graham, the director of the 1981 production of Hamilton's version.
Split into simpler sentences: The American composer David Carlson also wrote an opera based on the same novel. The libretto for Carlson's "Anna Karenina", which premiered in 2007, was written by Colin Graham, who had directed the premiere production of Hamilton's version.