Do you ever think to yourself, "Hey, I want to get that Maestro achievement in NITW, but I'm so so damn horrible at the bass minigame? do you ever wish you could play like this person right 'ere
Well, maybe you won't be able to do it straight away, but this guide contains like, a couple of useful tips and tricks on how to get better. Enjoy!

Okay, so first of all, if you're using a controller, you probably want to get rid of that. The button layout sucks for stuff like this imo and it just feels awkward playing it like that.
Throw your controller in the garbage bin right now. Done? Good.
Second of all, make sure not to play the bass in Mae's room, as this can stop the achievement from unlocking.

Now, to get this achievement you only have to play the 3 basic 'story' songs - Die Anywhere Else, Weird Autumn and Pumpkin Head Guy. The first 2 are extremely easy and probably shouldn't give you any trouble, but Pumpkin Head Guy sucks and is like, a major difficulty spike from Die Anywhere Else and Weird Autumn. Why? Because the devs obviously wanted you to suffer.

Remember how I told you to switch to keyboard for this minigame if you were using a controller before, because the button layout sucks? Well, the devs assigned the keys 1,2,3 and 4 to be the keys for the bass. Now, it may be easy to remember and stuff, 1,2,3 and 4 etc, but your fingers are extremely close together, and that can lead to confusion, the wrong keys being pressed, etc. I recommend to switch the keys to qwop/askl. This gives your fingers more room so they aren't just stacked on top of each over. But, if you imply on being a masochist and going with the 1234 setup, it's your funeral.
Seriously though, map the keys to what you find most comfortable, these are just suggestions

And my last tip - Practice. If you failed or whatever, you can always alt + f4 (Or command + q if you're playing on mac), re-launch the game and try again.
Now In the guide's name I said "Stepmania 6" This is because this minigame is comparable to the game Stepmania. If you're sick of retrying the same song over and over again, and are desperate, I recommend trying the game out.

Anyways, That's all folks. Thanks for reading my trash guide. Hopefully I helped you. If I didn't, then, oh well. I tried my best.