Williams revealed his involvement in "Solo: A Star Wars Story" during in an interview with Variety.
"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," Williams says.
Powell was announced as the primary composer for "Solo" back in July.
"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."
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