How To: Play Reggae blues in A minor using triads on the piano

Learn how to play 12 Bar Blues in A Minor played with Reggae off-beat Triads on the piano.
Note:
A=1
D=4
E=5 (E Major)

This 12 Bar Blues Progression/Pattern =1-1-1-1, 4-4-1-1, 5-4-1-1