I decided a couple of days that it was about time that I dipped my toe into the Sibelius Music website; I've got lots of scores in Sibelius that I'm happy to share with the world, and it looks like a great resource. I don't really know why I haven't registered there previously, to be honest... So I tentatively uploaded one score to see how it went - a ditty I wrote for brass quintet a few years back entitled 'Prelude & Fugue Gadgetique', a parody of C19th gothic writing (such as Leon Boellmann's 'Suite Gothique') based around the theme from the cartoon series Inspector Gadget... I've just received back an email telling me that it has been rejected for inclusion on the grounds that "This score is in breach of copyright". I am under the impression that a small amount of material from copyright works can be included without violating copyright, as a musical quote. There are a number of musical statements of the 'Gadget' theme in the work, the longest running to some 16 bars (or, dependent on how it is barred, possibly 8 in the original, which I have never seen written down) comprising 17 notes of the tune, but the counterpoints that weave around the theme, and all other parts of the score, are entirely my own invention. Am I correct in my assumption? What does the law say exactly about this issue? For reference, the score is available online in zipped-up PDF format here (standard brass 5tet) and here for a 5tet of brass band instruments. The longest statement of the 'Gadget' theme is in the bottom two parts in octaves from bar 144 to the end. Any guidance would be appreciated! This has been downloadable from my website for 8 years now, and I'm wondering if I ought to have it taken down.