Thank you for your comment!
Getting a bonus for "close dodge" is a mechanic used often in shoot'em up games, especially bullet hell subgenre. It's called "grazing" (also scraping, buzzing, scratching) and it's meant to incentive player to take some risk for a bonus points or other benefits (like getting power meter, like here).
Also, thank you for appreciating the music. I used the theme of symmetry even there, by swapping the pitch of notes with each other in the last bar :D