Did You Know?
The eponymous theme song, an instrumental originally composed by Acker Bilk
for his daughter Jenny, became far better known than the series, reaching #2 on the British pop charts and being the first British song to reach #1 on the US Billboard Hot 100 chart, after which it was named Pop Single of the Year by Billboard. As of 2012, the song remains the biggest-selling instrumental of all time in the UK. See more
Followed by Stranger in the City