(I don't know what the proper term is for instant playing of chord symbols... is sight right correct? Anyway, here I am using the term "sight reading chord symbols" to describe the ability to instantly play a song when you are given the chords)
Some context: For about a year, when I'm at the piano and I lose interest in practising, I've been noodling around by whipping out chord charts for pop songs and just playing. I've actually gotten quite quick at sight reading the chords with [often] nice voicings, and keeping rhythm. But I have hit a plateau and I am not getting any better or faster. I want to formalise how I learn, to continue to improve.
A quick example:
I was playing Ed Sheeran's I See Fire, which has the chords
A#m F# G# A#m. When I first picked it up I instantly chose a fingering and chord voicings that made it super easy. (Standard inversion on the
A#m, first inversion on the
F#, so I only changed on note). So in this case I could sight read chords instantly, and it sounded great.
But there are other songs that have the same vii V progression I've come across, but in a different key, where I don't see the relation so obviously. And if I don't see the relation I end up voicing both chords in standard inversion and I'm hopping my hands up and down the piano, and it all sounds very dull. Even in
C I've been guilty of this boring voicing. This makes me realise that there are certain key-dependent patterns I can detect easily, and certain I can't. And if I want to play new stuff confidently at speed (or someday modulate on the fly), I need to fix this.
My question: is there a good recommended resource (app/Youtube video series/book) that gradually teaches more intricate chord progressions and voicings so that I can build good sight reading?
(Caveat: I have a singing teacher I can bounce piano questions off, but I don't have the time/resources for a piano teacher as well)