Option to slow down a chart for practice mode

[Pepper]

I love the challenge Impossible mode provides and the charts you guys made for them. I have only passed Disco Disaster once so far and can't seem to repeat my success, but no worries.

I love the way you guys implemented grace notes (and were there glissandos too?). But sometimes I can't seem to decypher the patterns there charts provide, I simply get overwhelmed.

To help aspiring players can you consider adding the option to slow down the track up to 0.5x?

Love the game, can't wait for the full release, been a fan since CotN

[hasta_la_xp]

May be variable bpm for practice? so player can progressively speed up? Like in-game metronome?