It's not quite the same as being on the Titanic as it went down, but people stuck in a  massive traffic jam got their own impromptu concert.

A truck carrying horses broke down on a highway last week in England, causing traffic along to stop moving. So, what are drivers supposed to do? Well, in this case, they got a surprise when a string quartet -- also stuck in the traffic jam -- got out of their car and began playing.

If you've ever been to a wedding, you probably recognize the song. They're playing Pachelbel's Canon.

Facebook user Helen Delingpole took out her camera to capture the moment.

The celllist said, "We were on our way back from playing at someone's wedding and we got caught up in the traffic jam, then one of the quartet jokingly suggested it and we thought why not?"

Why not, indeed?