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Putting it all together, maybe the user is referring to a music video or a performance uploaded on September 24, 2011, in high definition by Dioguitar23, titled "Better," part of a 10musume project or compilation.
Next, "092411 01" looks like dates. 09/24/11 could be September 24, 2011, and 01 might be a track number or version. "hd" probably stands for high definition. "dioguitar23" could be a username or a project name. "Better" might be a title or part of a song name.