On-sale date from Amazing Heroes #55, with newsstand on-sale date of 1984-10-02. Released concurrently with January 1985 cover dated titles.
This issue has variants:
The New Mutants attend Lila Cheney's concert. Lila is attacked by an alien, and teleports her and Cannonball to her Dyson sphere. Lila, who is trying to steal Earth, is double-crossed. The New Mutants rescue them. Lila composes a love song for Cannonball.