Williams revealed his involvement in the Solo movie to Variety, saying: “The present plan is that I’m writing a theme for Han Solo, and John Powell is going to write the score, which he’ll do brilliantly.”
Speaking of Powell’s involvement, Williams added: “His assignment is something I’m very happy about.
“What I will do is offer this to John, and to [director] Ron Howard, and if all parties are happy with it, then I will be happy. … John [Powell] will complete the score.
“He will write all the rest of the themes and all of the other material, which I’m going to be very anxious to hear.”
Williams has written the complete scores for eight Star Wars films, and won an Oscar for the 1977 original as well as nominations for three of the other seven.