Strange choices of music for advertisements

[mtbc]

There has been a fast-food advertisement recently that features O mio babbino caro which seems an odd kind of sentiment for it. I was reminded of this by another advertisement just now for a broadband service, which incongruously plays us music from Jeff Wayne's The War of the Worlds. Perhaps they assume that viewers probably don't recognize these; I wonder if even the people constructing the advertisements know what they're using.