I discovered BBC music demos in the early part of 2000 when rummaging around in Chris Richardson's BBC PD collection. They were something of an underground scene, the precursors to Internet sites like Napster and The Pirate Bay - computerised renditions of the hit music of the day. The music industry was twitchy about copyright and indeed Michael Jackson's record company even threatened to sue Mastertronic for its Thriller -styled background tune on the Spectrum game Chiller . [Ah, if only they had known what was to come - a few SOUND and ENVELOPE commands probably seems like the least of their worries now! - Ed] The big age of BBC music demos seems to haven been the mid Eighties - I was bopping around to I Think We're Alone Now (Tiffany) and I Should Be So Lucky (Kylie) oblivious to the fact that the likes of Daniel Pugh had put together their own instrumental remixes of each. Why would I have known about them? They only existed as streams of zeros and ones. And they weren't readily available.…