Welcome, fellow right-hand-dominant Jazz pianist! May I begin by so boldy requesting that we introduce our left hand to each other? Nice to meet you, lefty; for yes, I, too, am the lonely keyboard companion to my Master's right hand. Let's talk!
You all know it's true. What is that left hand for? Even Chopin had trouble with it, especially the typically-weaker ring finger. What chance do we mortals have? Well, I'd like to take your left hand on a Jazzy journey of discovery.
A lot of Jazz/solo pianists don't know how to musically employ their left hand's services so tend to settle with plonking chords (known as 'comping') at regular intervals or getting into a stride feel of 'root note of chord > chord', repeat
. It's not so bad and does sound melodic and musical, but come on, we can do better than that.
The left hand is used, as Oscar Peterson once jokingly said, "to put the rhythm section out of work". What he meant was that it must be used as a keeper of time; it must provide a replacement for guitar chords, bass line movements and even drum/percussive