Few aspects of life escape the high-tech touch in cutting-edge Japan, including an official song written to welcome Pope Francis when he visits the country from Saturday (Nov 23).

Written by Mr Jun Inoue, the song, "Protect all Life - The Signs of the Times", is based on the theme of the Pope's Japan visit and was partly composed using an artificial intelligence (AI)-powered programme Mr Inoue created that can write a piece of music in a few seconds.