Order by total COUNT relative to repeating columns MySQL

Question

Firstly, apologies for the terrible title, I couldn't think of any other way to explain it.

I have a table that looks something like this :

ID  plays  track_id
1   23     1
2   8      2
3   100    1
4   4      2
5   10     3

I want to return the results so all plays for the same track_id are added together and then ordered by the track_id with the most plays first. So, in table form, the results from the above would look like this :

plays   track_id
123     1
12      2
10      3

But I'm totally lost on how to formulate this MySQL query in php.

Any help greatly appreciated.

Answer 1

SELECT SUM(plays) as plays, track_id
FROM Tracks
GROUP BY track_id
ORDER BY SUM(plays) DESC