"The Germans call these things ohrwurms or earworms - little bits of melody, little bits of sound that can worm their way into your ears and lodge themselves in your brain."
Sonic branding: An earworm to your pocket
The most famous sonic brand of them all is Intel's "bongs" four notes which were composed in 1994 and have been heard more than a billion times since. The tune came to composer Walter Werzowa after a weekend of head-scratching.
