NAZI Shazam. Yes you read that correctly.

It was reported a few months ago that German police have developed an app that detects if a song has far-right political leanings from just a short audio burst.

The report in Der Spiegel said the purpose was to speed up investigations and streamline resources, conjuring up an image of German coppers sat round the Hi-Fi having deep political discussions about the meaning of music.

The reason we bring up an old story is because it made us wonder about the logical extension of this. Given that authorities are constantly eroding our right of free speech, will technology of the future allow the automatic banning of any music they dislike? Music and art is our last bastion of expression - technology that recognises and bans certain music should be watched carefully.