You are allowed to use the Deezer API (you'll have to create a Deezer account) to get additional information if you need so. API documentation is available on the provided link.
No other external data source is allowed.
You may submit a maximum of 4 entries per day.
You may select up to 2 final submissions for judging.
Start Date: 15/04/2017
End Date: 31/05/2017 12:00 AM UTC
The rules page is a bit special: it will auto-update the text based on the parameters of the competition. The rules you need to add here are any additional rules relating to dataset usage. You may also put grading information here.