Not sure it has those specific features but you may want to check out Sound Control. Source: 11 months ago

SoundControl is exactly this and more: https://staticz.com/soundcontrol/. Source: about 1 year ago

Hey, bro, I think I've found a solution: I installed the SoundControl software, enabled the "Force Soft Volume Control" option. Yay, the volume is now adjustable! Hope this helps you too! Screenshot. Source: about 1 year ago

I haven’t installed it yet, I’ve got a few days off and don’t want to waste the trial period. This is the one I bookmarked from the ones I found: https://staticz.com/soundcontrol/. Source: over 1 year ago

IDK whether a 3rd party software audio mixer would help; you may download a trial here: https://staticz.com/soundcontrol/. Source: over 1 year ago

I believe this is adjacent, but I quite like https://asoftmurmur.com/. I’m not sure if it’s able to run offline. - Source: Hacker News / 5 months ago

This isn't music per say, but do you know about A Soft Murmur? Source: 6 months ago

A Soft Murmur lets you create custom ambient sounds to improve your focus or relax while working. Mix sounds like rain, thunder, and birdsong to create your perfect background noise. - Source: dev.to / 8 months ago

There are a few white noise generator apps actually and I love them. https://asoftmurmur.com/. - Source: Hacker News / 10 months ago

If it gets insufferable, play some white noise in the background, like rain or wind noises, at the very least, it'll distract you from the ringing. https://asoftmurmur.com (something like this ig). You might want to consult an ENT specialist too. Source: 12 months ago