In the classical world, this practice would usually be called ‘inversions’ of a chord. Briefly, a major or minor chord with the 3rd shifted to the bottom (such as D/F#) is a first inversion.

As she smoked, Argerich, one of classical music’s most elusive and enigmatic artists, obsessed about how she had played the opening flourish of Schumann’s piano concerto that evening with the ...