The Fort Worth Symphony presents the world premiere of Jake Heggie’s Earth 2.0 on Dec. 6-8, under the baton of music director Robert Spano. The work uses a libretto by Anita Amirrezvani and features countertenor Key’mon Murrah with dancers from New York-based dance troupe Urban Bush Women. Beethoven’s Symphony No. 3, Eroica, completes the program.