[im3w1l-alt]

Music is definitely an acquired taste. My family was not very good at nor into music. I didn't understand the point of instrumental music until my mid teens. Before that I only listened for the lyrics.

On a different note, people often think of the octave as the most fundamental interval, but the most fundamental is the very same tone twice. Even here people like a little dissonance. Two tones at nearly but not exactly the same pitch will produce a pleasantly shimmering chorus effect.

Anyway music is subjective and there's is no sound that is better than everything else in all respects and contexts.

[schwartzworld]

I have never heard "out of tune unison" described as an interval, except in a joke about viola players. Sure, there's a difference between 440 and 442 but that's not considered an interval in western music theory.

[agency]

> Sure, there's a difference between 440 and 442 but that's not considered an interval in western music theory.

Well that's just your 2 cents... I mean, 7.85 cents.

[gpvos]

I don't play accordion but I understand they have multiple reeds for the same note, which are usually tuned slightly off, relative to each other.

[mrob]

It's also standard in pipe organs, where it's called "celeste". See:

http://www.organstops.org/c/Celeste.html