Mezzoforte band

LP record-grooves x 1000

According to spectrum analyser shows that vinyl LP still have signal after at 20 KHz, and the signal level is rolling off with frequency response at a rate which suggests it would go to zero in the 30-35KHz range.
None of the kurant digital format not be able to play at that range with the frequency response at the overtone´s sequences.
It is a direct threat to materialism, if there where does not cut off the harmonic series.
Phenomenologically, voice with those harmonic series is a different experience than the digital audio experience.