This document discusses the legal issues surrounding the use of background music in blogs in Taiwan. It notes that some bloggers use background music from sources like KKBOX or BGM without permission. While some music sources allow limited free use, strictly speaking this would require permission. The document suggests that under fair use principles, non-commercial blog use of short music clips is likely acceptable, but commercial use would require licenses. It encourages bloggers to properly attribute music sources according to Creative Commons principles when reusing others' work.