Quickest way to poll a changing json and update a row in a Google spreadsheet

Aka "a poor mans database".

A user asked for a playlist for one of our streaming radiochannels. We have no official playlist for that channel, and being pressed for time I hastily created a Google Spreadsheet and added a simple script for polling a json-script. It uses Google's inbuilt trigger solution for running the script every five minute. The script lacks any checks and failsafes and is meant for demo purposes.