It seems that Santa's IT Estate has been struck with ransomware... he was so tired after the 2020 Christmas Run that he opened a dodgy link.
However, the ransomers have given Santa an out. If you find the right song titles, Santa's IT Estate will be unlocked.
Each song title is described quite literally...
The Ransomer left this link to CyberChef to start you off... ThE AlGoRiThM. Today's clue is
Geological object orbitting author of Hitchhiker's Guide to the Galaxy