3 adjectives to describe auditions

Evidence interesting to themand, in a secondary degree, to others who know themcan thus be procured; but strangers are left to the same choice of doubts as in all reports of psychological experiences, 'chromatic audition,' views of coloured numerals, and the other topics illustrated by Mr. Galton's interesting researches.

And for an instant Spinrobin, listening to the rolling sound but not to the actual words, fancied that a faintly colored atmosphere of deep scarlet accompanied the vibrations of his resonant whisper and produced in the depths of his mind this momentary effect of colored audition.

And sung the part of "Dolores" herself at that very informal audition?

3 adjectives to describe  auditions