During our demo, music was streamed from the other end of our conference call to the Continental GT and it sounded like we were spinning the tracks ourselves -- crystal clear with no distortion or static to be heard.

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As they demo search results like fav music of Obama fans vs. fav music of Romney fans, or search your friends by the language they speak, or where they work, its potential value as a resource makes a lot of sense.

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Demo from Xander Soren, director of music marketing.

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In a video demo, a person controls the playback of music on a laptop.

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He has recording facilities at his home and hopes his demo CDs and live appearances will attract interest from music producers.

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It also features rap mogul Sean Combs, otherwise known as Diddy, who finally agrees to listen to a demo of the actor's hip-hop music.

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Instead of a head-long assault on the industry, they burned demo CD's to give out at gigs and put music up on their website to create a groundswell of fans.

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While it was at Radio City Music Hall, it felt like a Consumer Electronics Show demo writ very large.

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Chalk up another great advance in the music industry to the record labels, who are already paid plenty to reject artists who submit demo tapes for free.

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If you have a demo CD of your best tracks then let us have a copy along with a written biography telling us about your music.

BBC: Martin Winch