What lives at 10 kHz
No musical fundamentals reach this high - the piano tops out at 4186 Hz - so everything at 10 kHz is overtone and noise: the shimmer of cymbals, the breathiness of a close-miked vocal, string squeak, tape hiss. Boost a mix's top shelf around 10 kHz and it reads as air and expense; cut it and things turn polite and distant. The band matters not for pitch but for texture.
Perceptually, tones up here barely register as having pitch at all. The ear's pitch resolution collapses above about 5 kHz - which is precisely why no instrument bothers placing fundamentals there.
The slow fade
Aging hearing (presbycusis) erodes from the top down, and 10 kHz is on the schedule: children hear it effortlessly, most 40-year-olds still hear it clearly at moderate level, and by the 60s it is commonly gone or greatly attenuated. Unlike the 15-17 kHz range, losing 10 kHz is audible in daily life - music loses some sparkle, and the sss sounds of speech dull slightly.
Hardware is usually not the excuse at this frequency: nearly all headphones and most speakers reproduce 10 kHz competently. If this tone is silent on decent gear at moderate volume, that is information - place yourself precisely on the curve with the hearing age test, and check the frequencies above with 12 kHz and 15 kHz.