Time is out of joint: the transmedial hauntology of David Bowie
If you have no idea what that means, well, it’s the title of an article in the academic journal Celebrity Studies. The current issue is dedicated to the study of Bowie.
Other recent issues have articles on (for example) The Great British Bake-Off, Super Voice Girl, Jacqueline Kennedy Onassis, X-Men, Doctor Who, Haruki Murakami, Amy Winehouse, Beckham, Beyoncé and Trump.
With access through UEA Library, you can read all of these online.
If you need background music for a video or slideshow, you could try the Free Music Archive.
The music is arranged by genre – Blues, Classical, Country, Electronic, etc. – and then sub-genre, such as Rock > Loud-Rock > Noise-Rock > Sludge. (More suitable, perhaps, as background music are genres such as Instrumental > Ambient.)
Tracks can be downloaded as mp3 files and then added to your project. Most of them have Creative Commons licences such as Attribution-NonCommercial-ShareAlike.