Assuming one has a Scope & a Square wave generator, try passing a 20 K HZ Square wave through a cable & Observe the waveform that comes out of the other end.
The closer the wires in a cable are to each other, the more rounded will be the Square Wave coming out of the other end.
Only way to get a matching Square Wave Out, is to space the wires some distance from each other.
As music is not composed of Square Waves, some may hear the effects of this rounding of waveform & enjoy the results; others may think that that the rounding is negative for the sound they hear.
Take your pick & use Speaker Wires that fits your preference.