Listen to Technology Is A Useful Servant but A Dangerous Master online. Technology Is A Useful Servant but A Dangerous Master is an Instrumental language song and is sung by Jonathan Fischer. Technology Is A Useful Servant but A Dangerous Master, from the album Technology Is A Useful Servant But A Dangerous Master, was released in the year 2017. The duration of the song is 2:59. Download Instrumental songs online from JioSaavn.