How do I use “Rave” for the Sonic Blade in Kingdom Hearts I?

Question by TGOMO: How do I use “Rave” for the Sonic Blade in Kingdom Hearts I?
Every time I use the Sonic Blade, the option for Rave pops up in the FIRST command box, but it always stays grey, or like it’s locked. I also read that it’s supposed to appear in the LAST command box (then get Blast, whatever that is), and you should be able to get it. Why is it not working for me? Do I need to get/do something else first?

Best answer:

Answer by S
While the ability is active, “Rave” and “Blast” appear in the first command box.
In order to get the “Blast” command, you have to press the button only when “Rave” is white, which only happens at the end of each strike.

Below is a video with a successfully executed Sonic Blade. (skip to 2:45)

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