15-minute docu on the history of the Berlin Wall, in English.
The song in it is “Tear down these walls” by Runrig.
Read more about it:
Hannover‘s Hinterhöfe — Eine überraschende Welt
Die Nordstory, NDR docu on the urban courtyards of Hannover-Linden, an inner city neighborhood in Niedersachsen (Lower Saxony), Northern Germany. 58 mins, auf Deutsch.