Seems The Beatles are still very big in America.
In California they have their own dedicated radio station, while digital music and video streaming service 'Pandora' (like Spotify, Soundcloud or Deezer) but only available in the US has a playlist called 'Imagine' - mellow rock instrumentation, folk influences, etc. playing 70s Beatles, Eagles, Creedence Clearwater Revival, Fleetwood Mac... you get the idea.
While this service was playing one evening a track came on: '100 Years' - Battle For Everything, it told me. Turns out it's actually by Five for Fighting, the song a US hit single from 2003 (did nothing in the UK) off an album called 'The Battle For Everything'.
Five For Fighting are basically Los Angeles born John Ondrasik. '100 Years' sits neatly within the 'Imagine' playlist, the lyrics and the piano melody.

I chose this video because it has old cine film footage of both Scotland and London and a glimpse of the 'Red Arrows' for good measure.

More: www.youtube.com/watch?v=GRz4FY0ZcwI&index=1&list=RDGRz4FY0ZcwI