It's correct as it is. 'Selling' is active in meaning, 'sold' passive: "Maple Leaf Rag was an instant hit, sold by booksellers all over the country. That it's a composition is irrelevant.2. Published in 1899, "Maple Leaf Rag" was an instant hit, selling several hundred thousand copies in 6 months: it helped establish Scott Joplin as the preeminent ragtime composer.
ME: "Maple Leaf Rag" is a composition, so I feel "sold" but not "selling" should be used.
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