Mostly we don’t use the notes at either extremity of the Anglo keyboard’s range. This is because we mostly play melody, and don’t need those notes.

But if you want to play rich chords with the depth of a bottom end, then you’ll want to play the very lowest notes. These are at buttons T1, T2, C1 and G1. You play them with your ring finger and pinky. It does take a bit of getting used to, but is worth the effort. I started exploring T1, T2 and C1 by playing a sequence of ‘A,’ on the press ( ring finger on T2), then ‘G,’ on the draw ( pinky on C1) then ‘F,’ on the draw ( ring finger on T1) then ‘E,’ on the press ( also ring finger on T1).

Practise that sequence of 4 notes, nice and slow, over and over until it starts to no longer feel unnatural. Then play each of them in combination with higher notes to form chords. e.g. ‘A,’(T2) + ‘C#’ (T3) + ‘E’ (C4), making an A major;  ‘C,’ (C1) + ‘E’ (C4) + ‘G’ (C5), making a C major; ‘E,’(T1) + ‘G’ (G3) + ‘B’ (G4), making an E minor.

Doing this slowly and repeatedly is the key.