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You need to post your questions in the the right category yourself since yahoo only post what the "Keyword" is..at the top of your question click on "Edit Category" and there will be an "All" which will bring up all of the categories or you can click on Entertainment & Music and then click on music to find what sub-category you need to do this AFTER to post the question for now on.
If you can';t find your question/s go into your activity and click on questions and look at where you posted them at and change it if they are in the wrong category. BUT if they are dated old you might as well delete them and make a new post.