As others have said, train your ears !!!!!!!!!!
The practice you put into this will be repaid to you throughout your life, as at sometime in the future, it could be sitting in a traffic jam, or anywhere, you will listen to something and be able to honestly say you know how it goes without even picking an instrument up.
And as Bilbo says:
LEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSICLEARN TO READ MUSIC
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