Up key to use the bubble shield!
So the music was handled by TwoSpaces, I did the SFX with Fx Hammered and solely used the noise channel.
Thanks for the tip! I'm not a god gamer so it should help me finish the game.
I never figured out how to use FX Hammer, but cool to see that it's viable. Noise channel SFX is a nice courtesy to let the BGM use the others. I learned some new noise techniques this year, need to explore more with the 7-bit mode.