In the City: A Celebration of London Music
If you are interested in English music of the last 50/60 years this is a great book to delve into. Spanning the history of music in London from medieval times to 2010, it is a great read, with lots of insights and stories that I did not previously know. The chapters from the late 1950's to 2000 were of the most detail and interest, and really demonstrated how interlinked all the various musical genres are.