Do I need to learn all 12 keys on saxophone to play the Blues?

Twelve keys are a lot to learn, and are you ever truly going to play all 12 keys? Chances are, you truly desire to advance in your musical journey and master all twelve keys, but often feel overwhelmed and discouraged.

Truth is, unless you are a Professional Saxophonist, you are not equipped with the ability to play all twelve keys solely based off hearing, but what if I told you that there was a way for you to gradually develop the skill of translating and playing music in all 12 keys, just by listening?