Another useful technique in Rock keyboard playing is the use of alternating octaves with the left hand. Written in the next example is the E natural minor scale played in alternating octaves by the fifth and first fingers of the left hand.
Here is a keyboard part using alternating octaves. It will probably sound familiar to you.
This example shows the same part transposed to the key of A minor.
Using octaves on repeated notes is a great way to create a driving rhythm. The following 12 Bar Blues shows chords played over an alternating octave left hand part. Take it slowly at first and practice each hand separately if necessary.
Here is a final solo which makes use of the alternating octave technique. Coordinating the two hands may be difficult at first, so practice each hand separately if necessary.
Keep playing, keep practicing and have fun!