As for the reading of 白銀のカルと蒼空の女王, I went for しろがねのかるとそうくうのじょおう as provided by
the publisher's official youtube channel. So even if a google search by "Shirogane no Cal to
Aozora no Jouou" returns a number of results, I doubt it's the correct one.
Btw, I really suck at romanization, so perhaps "Soku" more fits VGMdb's scheme than "Soukuu".