It was published in 1891 so I guess the harmony is based on common practice era music. There is one exercise (in C major) that I can play but I just don't really know how to understand it theoretically.
1 bar: I, V6, IV6, I6/4, 2 bar: IV6, then a chord with B-F-A, then ending on I
These are two of the 4 bars (and the left hand plays only a C octave). I do not understand the B-F-A. All I know is that if you move B and F one half step you will end on C and E.
How should one view the B-F-A chord? Cause we are thinking in chord, right? And what I learn in school was that when taling about inversions you must look at both the left hand and the rght hand. So if there is a C octave in the left hand then all I (or C) chords will be said to be in first inversion?