Hi Fi reproduction and sound production seem to be whole different worlds. They may not but they may be .
A secret of production may be that each instrument or vocal is passing from a separate electron tube preamplifier. This conditions the signal with a most euphonic harmonic adding character, instantaneously trims nasty peaks and therefore makes the part sound loud. One can get away with the "distorted" part not sounding harsh as there is usually only one instrument in each preamp. So the frequency spectrum sent is contained and there is not the effect of inter modulation distortion. Then the outputs of all electron tube preamps are added.
A Hi-Fi reproducing amplifier has to deal with all those instruments together. Nevertheless single ended class A electron tube power amplifiers sound extraordinary.
But we must not forget that what we give them is an easier signal produced by many electron tube preamplifiers each one doing its job together with analog tape.
A possible example:
When I fall in Love - Nat King Cole
https://m.youtube.com/watch?v=91bQyER32GY
Tubes versus transistors, is there an audible difference? - Russel O. Hamm - JAES
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