This article is rated C-class on Wikipedia's content assessment scale. It is of interest to the following WikiProjects:

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To move the article from C-class to B-class I would consider the follow at a minimum:

1. Incorporate as many of the "see also" items into the article as would be logical; don't just shove them in anywhere.
2. Consider wikilinking section 2.
3. Consider including more sources or increase inline references to some of the currently unsourced comments and paragraphs.

§ Music Sorter § ( talk) 07:29, 17 November 2010 (UTC) reply

New improvements

Thanks for your kind review and suggestions: I tried to follow your points. Would you mind assessing the differences? Thanks a lot

-- Pastore Italy ( talk) 23:27, 19 November 2010 (UTC) reply