My site will be divided into multiple areas, or tabs, for example, Music, Politics, News, etc. Under each tab I'd like to display a different sidebar (my sidebar will contain menus representing categories, for example, in the Music tab, the sidebar should show Rock, Classical, Jazz, but in the News tab it should show National, International, Sport, etc). I'm hoping that all my content could be of the same content type, but that they exist under one tab or another.
How should I set this up? So far I have tried similar content types, one for each tab, and a theme for that type which shows the appropriate sidebar. But it'd be nicer to use just the one content type overall, with a field indicating which tab it belongs to. Is that possible?