PCM 768kHz! - 24bit - FREE TRACK from Carmen Gomes Inc.'s Ray! Album, Is this overkill or does it make sense?

Native DSD are releasing her older 96 khz recordings in higher bit rates see; Native DSD higher bit rates program

https://www.nativedsd.com/product/sl1001a-thousand-shades-of-blue/

If it was mixed at 768k and has never seen lower sample rate then OK.

If it was mixed at lower sample rate then not OK for me. I don't wish to download upsampled content.

I think square wave was not well chosen to visualize @christian u's  point. It's is too far from how usual music content looks.

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The RME has a maximum sample rate of 768kHz. To really see what the RME ADI-2 is capable off, we created a 768kHz/24bit file straight from our Studer A80 tape recorder playing the ¼" reel to reel master tape from our latest release. 
Listening and A/B comparing with the Studer the result is quite convincing. In our opinion the sound is very close to the analog master tape.

They created the 768 from the analogue tape master.

On 1/3/2022 at 4:14 PM, christian u said:

I guess it is logic development. The higher the sample rate the rounder the waveform.

PCM768-32;

it's getting pretty good reviews;

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“New work from Carmen Gomes Inc....this is a masterpiece...and a phenomenal experience on a refined hi-fi set. Highly recommended!" Eric De Boer, Hifi

 

"Engineer Frans de Rond has captured the entire setting in a way that allows you to experience the superb interplay of these seasoned musicians. This is so well recorded that turning up the volume knob significantly only seems to make the music even more intense not louder." S.v. Aelst in ‘JazzFlits’

+2 and indeed the reviews reflect my impression of this great great album. Here is one more;

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"This album deserves recognition as one of the best vocal albums released in 2023.
If you're a blues fan, get this album. If you love female vocals, get this album. If you simply enjoy great music making, get this album. Did I say this enough? Get this album. You'll love it.
The album is 15 tracks of pure enjoyment—excellent contemporary blues that honors the traditions of the genre and the music of Robert Johnson
Carmen Gomes Inc. previously paid tribute to blues great Robert Johnson on their excellent album Up Jumped The Devil, released in 2020. With Stones in My Passway, Gomes Inc. moves to a higher level of music interpretation. Her phrasing, dynamics and inflection are simply remarkable. She sings directly, honestly, without unnecessary embellishment or vocal manipulation. Her sultry delivery of inspired interpretations of this music immerses one into the soundscape being created by the collaborative work of Gomes and her band members. And the work of her accompanying band members truly shines in this recording. The percussion work of drummer Bert Kamsteeg makes a strong contribution, often a central one, complementing the vocals of Gomes. Contributions from guitarist Folker Tettero and double-bassist Peter Bjørnild are equally strong. These four musicians are beautifully in sync, consistently complementing and extending each other's contributions to the music.
The recording quality is among the best recordings I've heard from Sound Liaison recording engineer Frans de Rond. And he's made quite a few of my favorite recordings. But, when recording Carmen Gomes, Frans seems to rise to yet another level. Frans has been Carmen Gomes' preferred recording engineer for 27 years for good reason! " review from Positive Feedback, USA  

It isn’t overkill and it makes a non-trivial difference in quality and fidelity.  I’m not going to dive into a scientific proof here because this isn’t the place, but there are a few principles that address the benefits of higher sample rates and bit depths:

1. The “master,” from which a high sample rate and bit depth copy is created, dominates the perceived quality of the release.  This includes: the recording technology such as DSD, PCM, or analog, the track mixing, and audio engineering (i.e. levels, equalization).
2. The digital “master” is recorded at a sample rate that is an integer multiple of the rate of the release 
3. The brain is a crucial component of listening.  Human beings have a remarkable ability to distinguish specific sounds from many simultaneous sounds, by mentally focusing on one in particular.
4. The brain also has the ability, variable for each person, to “fill in” inaudible or absent parts of familiar sound.
5. While the same “units” (Hz) are used to measure sounds and sample rates, they are different items in the mathematics of digital audio and not appropriate substitutes for each other. 
6. Some individuals, truly , do not perceive any fidelity improvement in digital audio with sample rates and bit depth greater than 44.1khz and 16bit, CD quality.
7. Contrary to what many, as described by item 5 above, believe to be “confirmation bias”, some individuals truly hear the fidelity improvement from increased sample rate and bit depth. 
8. The so-called “science” that those in item 5 above cite as proof that sample rates greater than 40khz are unnecessary is based on the inappropriate use of valid theorem for which the necessary conditions to for its application do not exist.

5 or 6?  Which do you mean?

Since I can’t edit my original post, it’s stuck as is.  But I think it’s pretty clear to whom I am referring isn’t it?

Sound Liaison provide the one to one copy of the original master.
This is a One Mic + recording.
Original recording format is 352kHz.
Mastered analogue signal chain to both 352kHz and 768kHz.

Folks, I am trying to understand what it means above that the Original recording format is 352khZ BUT Mastered analogue signal chain to both 352kHz and 768kHz? 

Does it mean they simply upsample from 352kHz to 768kHz ?

I believe they record in 352 and then after mixing and editing create  2 masters using analog mastering equipment, that's how  I understand it,  Joe Whip is a bit of an expert on that label and has direct contact with them, maybe Joe knows more?