The A Natural Minor scale contains the following notes:

A B C D E F G A

Whole Step - Half Step - Whole Step - Whole Step - Half Step - Whole Step - Whole Step

or

WHWWHWW for shorthand

Like the C Major scale the A Natural Minor scale does not contain any sharps or flats. Because of this A Natural Minor is referred to as C Major scales Relative Minor, or C Major scale would be A Natural Minor’s Relative Major.

The A Minor Scale can be sung with:
C   D   E    F    G   A    B   C
Do Re Me Fa  Sol La  Te  Do

Pronounced like:
Doe Ray May Fa Sol La Tay Do

Minor Key Signatures

The Natural Minor scale uses the relative Major key signatures so the key signature for C Major is the Same as A Natural Minor.