Soundtrack
Ballblazer's theme music, called "Song of the Grid" and heard between matches, was algorithmically generated, a technique designed by Lucasfilm Games team leader Peter Langston and called "riffology". The lead melody is assembled from a predefined set of 32 eight-note melody fragments, or riffs, which are put together randomly by an algorithm that also makes choices on several parameters including "how fast to play the riff, how loud to play it, when to omit or elide notes, when to insert a rhythmic break". The melody is accompanied by bassline, drums and chords, which are also assembled on the fly by a simplified version of the above approach. In effect the music plays forever, without repeating itself but without straying too far from the original theme. Langston, an experienced jazz, rock, and folk musician, said of Ballblazer's music: "One reviewer, an eminent jazz player ], said it sounded like John Coltrane did it. I think that's my best compliment so far."
A sample of Ballblazer music from the Commodore 64 version :
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