About "spelling of accidentals", here's a large HN thread about that, https://news.ycombinator.com/item?id=32626218 https://news.ycombinator.com/item?id=326262

About "spelling of accidentals", here's a large HN thread about that, https://news.ycombinator.com/item?id=32626218 https://news.ycombinator.com/item?id=32626218 ("Why are D-sharp and E-flat considered to be two different notes?") It's a bit philosophical, but a single piano note can have multiple notational representations, and some are more accurate than others, in a given harmonic context. That this composer chose a "less correct" notation in a couple places, is *technically* a no-op (no audible difference), but most musicians would agree it reflects a sophistication gap.