As viewers got a small taste of what Ceefax had to offer, millions of Britons during the 1980s invested in new teletext-enabled TV sets which gave them access to the full Ceefax service, which by now included recipe details for dishes prepared on BBC cookery shows, share prices, music reviews and an annual advent calendar.

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But whatever the content reviews, images, music how do you sift through it all to find what suits your preferences?

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Listen.com, also in San Francisco, is using a similar idea to build a directory of music on the web, complete with reviews written initially by its own reviewers, but incorporating the comments of visitors to its website as well.

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According to Triton Digital, which tracks Web traffic, Pandora, which streams a full spectrum of music 24 hours a day, generates the biggest numbers. (NPR.org, the network's overall website, ranks sixth, with NPR Music accounting for 15% of its audience.) Sites like Pitchfork, which appeals largely to indie-rock fans who appreciate not just music and videos but at-times-scalding reviews, are also playing the game.

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The Turtle Island Quartet has earned rave reviews for their jazzy take on traditional chamber music and their classical take on traditional jazz.

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Renamed The Band, the group put out its debut album, "Music from Big Pink, " in 1968, to rapturous reviews.

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Early reviews of "Shruggy Ji" have likened its music to that of Washington-based Go-Go, and the band's sound is often compared to the music of New Orleans or the Balkans.

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