This thing is weaponizing my ear training.
Pick a bizarre scale. Press a chord button on the TB, and then try to nail that chord on a standard keyboard by ear. You have a hint because you know the chord degree, but not the chord type or inversion. If you fluff it try again. Try other chords, or hit a key change button, or a mode change button, or change the inversion, or change the voice, and try another chord. (Going between two different voices increases the challenge.)
After you nail the chord, you can look at the TB screen and it will help you learn the name of the chord as well. Switch the hand playing the chord on the standard keyboard and do some more.
I’m already improving my ability to hear a chord and play it, getting the sound in my fingers. Plus i find it’s a fun challenge.
If you hear nice progressions doing this, play them in succession on the standard keyboard.
Also, after doing this practice for a while, i like to just improvise some, two hands, on the standard keyboard. I usually have some new ideas to try, and it gets me out of a rut.
I’ve had some training to be able to do this, but not a lot.