SQL query with distinct and sum

I have the following medleys table that combines colors, fruits and ratings:

[medleys]
medley_id   |   color   |   fruit   |   rating
==============================================
1               red         apple       25
2               blue        pear        5
3               green       apple       12
4               red         apple       10
5               purple      kiwi        5
6               purple      kiwi        50
7               blue        kiwi        3
8               blue        pear        9

I am trying to write an ANSI-compliant SQL query that will combine every unique/distinct color-fruit pair and sum each pair's individual rating values. Thus if you ran the query on the table above it would produce the following result sets:

[query]
color   |   fruit   |   sum
===========================
red         apple       35
blue        pear        14
blue        kiwi        3
green       apple       12
purple      kiwi        55

Thus, the query sees there are two red-apple pairs in the table, and so it creates one result for the red-apple pair, and adds up their constituent ratings (25 + 10 = 35), etc.

I am sure that I need to do a select for distinct color/fruit values, but not sure how to aggregate the ratings at the same "level/scope":

SELECT
    distinct(color, fruit), sum(rating)
FROM
    medleys

Order doesn't matter. color and fruit are VARCHAR(50)s and rating is INT. Thanks in advance!