(2 press reviews)
Original Recording Format: DSD 64
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Eyeopener with Klatwerk3 is a musical adventure, with room for reflection. Klatwerk3 is a Jazz Trio from Groningen.  On Eyeopener, the new album from Boelo Klat (Piano), Ancel Klooster (Drums) and Ruud Vleij (Double Bass) have produced a musical adventure, which creates room for reflection.

On the way to New York piano man, Boelo Klat solves the financial crisis on his own with the number  Money and during the journey, he meets a deadlyTarantula. Making acquaintances with love opens his eyes (Eyeopener) and brings about his odes to his family (Song For My Sister), to his musical hero (Walk Like Monk) and Abdullah (Ibrahim). He tackles the  B.A.R. Blues with his camerades/partners Vleij and Klooster, who support and challenge Klat. Finally ending in the (Flow) searching for depth and reflection.

Taken from the origins of Jazz tradition Klatwerk3 seeks with this album, which is produced by Aliud Records, quite clearly towards innovation and depth. With a new member (Ruud Vleij) and on a new course Klatwerk3 has developed a matured sound.  Eyeopener with 15 tracks has become a variable album, with full blast swing and crispy funk.


Please note that the below previews are loaded as 44.1 kHz / 16 bit.
Piano Man
New York
Flow 2
B.A.R. Blues
Walk Like Monk
Flow 1
Song For My Sister
A Funky Primer
Moon River

Total time: 01:06:50

Additional information





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Digital Converters

Sphinx by Merging

Mastering Engineer

Jos Boerland

Mastering Equipment

Marren Media


Gonzo Audio, Sonodore, DPA, Neumann

Mixing Board



NativeDSD selectively creates higher DSD bitrates of label's releases using two methods (Merging Technologies Album Publishing and Singnalyst HQPlayer Pro), depending on the original edited master source. In order to understand the processes, a bit of background is appropriate.  

NativeDSD sells only recordings that were originally recorded in DSD or DXD (352.8KHz PCM). The overwhelming majority of these recordings were edited and post processed in DXD, then converted (modulated) into DSD deliverable bit rates. NativeDSD acquires the label's original DXD edited master, and using Merging Technologies Album Publishing, creates a first generation DSD64, DSD128, and DSD256, as well as a DXD FLAC deliverable.  Additionally, on selected recordings, a 32bit PCM WAV file is extracted (the DXD PCM FLAC is 24 bits by format definition), and uses it to modulate a DSD512 using HQPlayer Pro. The exception to the above are the few label recordings (Yarlung, Eudora, Just Listen etc.) that record in DSD, and do no PCM post processing mixing, level balancing, EQ etc. That's doable by restricting post processing to just editing, where only the edit transition interval (typically 100ms or less) is PCM converted, leaving the DSD music content unaltered when rendered. For those recordings, the DSD edited master (the actual recording master with edits) is used with HQPlayer Pro to re-modulate the missing DSD bitrates. Why do any of this? It's to provide a DSD bitrate deliverable choice, allowing a customer to purchase the highest DSD bitrate their DAC will support. It's correct that there's no additional music content information contained in the higher DSD bit rate from the original DSD bitrate. What's different is the uncorrelated modulation noise content placement in the frequency spectrum. When a DSD original file is converted to DXD (PCM), the inherent DSD modulation noise is removed through the decimation filtering, and re-inserted when modulated back to DSD. The modulation noise (again, uncorrelated) is the carrier part of the DSD bitstream modulation, and an inherent part of the DSD bit stream.


While the spectorial shape is the same regardless of the DSD bitrate, it's effective start and end points move an octave higher for every doubling of the DSD bitrate. For DSD64, the uncorrelated modulation noise is about -110dB at 20KHz, rising to about -50dB at 100KHz. For DSD512, the modulation noise is about -110dB at 160KHz, and -50dB at 800KHz. What this allows is for the customer's DAC to use gentler, more Gaussian shaped reconstruction filters, with far improved phase response.




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Original Recording Format


Jos Boerland

Recording Engineer

Jos Boerland

Recording Software


Recording Type & Bit Rate



B&W 805

Release DateMay 31, 2015

Press reviews

JazzNu 5 out of 5

Contrary to what has now become the usual practice, the album ‘Eyeopener’ by Klatwerk3 contains a comprehensive booklet. On reading through the booklet you will, of course, be maneuvered in a certain direction.

But anyone who can summon up the patience to listen to this remarkable album by pianist Boelo Klat without first reading the information will come in for some wonderful surprises. And come to the conclusion that the hitherto little known Boelo Klat is a musician who is not to be underestimated.

In any event, musicians – certainly those engaged in improvisational music – should exploit two qualities to the full: instinct and intuition. Intuition will be best suited – let’s keep to pianists for the moment – to classical performers. Indeed, they must keep to the score, but they are at liberty to put their own interpretation into the notes. Instinct, on the other hand, is something we would sooner ascribe to improvisational musicians: only at the moment, they touch a key do they decide which note will follow.

Of course, it could be that musicians use both instinct and intuition as implements. One man who is definitely gifted in that way is the pianist Boelo Klat from Groningen. His album Eyeopener is the direct outcome of what is going on in his head and is passed on to his hands. That is obviously not something unique; it’s what happens to any musician. But Boelo Klat has put his instinct at the service of his intuition and in so doing he has achieved remarkable results.

It follows that Eyeopener cannot be classified under a single heading. All sorts of music pass by light music, a march, melodious musings, harmonious intro’s, free improvisations and a lot of good stuff from modal jazz. But what’s more: you will hear it played as you would want it to be played. Boelo Klat is a kind of wizard, turning suggestions into reality. Who manages to create a make-believe world, offering insights you would not have thought possible. All of which has to do with the twin qualities instinct-intuition, which immerse the music in an air of casualness, as if the pianist has cast aside all the rules of music and is simply doing his own thing. And so defining his own playing, his own sequence, his own identity.

That is the way – in fact, the only way – to listen to Klat’s fifteen own pieces and arrangements on Eyeopener. Then those surprises I mentioned in the introduction will become apparent as a matter of course. The melting pot of impressions, of styles that Boelo Klat effortlessly handles and to which he gives voice, evoke a sense of parting. Of leaving behind all the good stuff you’ve heard before in your life, stuff that was squeezed into a straitjacket because ‘that’s how it should be done’. Boelo Klat has said goodbye to all that and therein lies the strength of this exceptional album.

In Ruud Vleij on contrabass and Ancel Klooster on drums and percussion, the leader-composer has found worthy teammates. They make Klatwerk3 into a solid and unique entity. One that simply has to play this music, music that you can’t leave to anyone else. That goes under the appropriate title of Eyeopener.

Then a word about the booklet. Nicely made, with poems to accompany the fifteen pieces. Impressions, as you might call them, that reveal some of the thoughts and ideas of Boelo Klat. Titles such as Walk Like Monk, Song for my Sister, Money and Ibrahim leave little to the imagination. In each there is something of Boelo Klat. That even goes for Moon River by Johnny Mercer and Henri Mancini, arranged by Klat and transformed from croon song to final episode of this remarkable cd Eyeopener.

Moors Magazine

If Klatwerk3 lived in America they would have become well known long ago because what the trio produces is absolutely world-class. It is a bit unruly, but also crystal clear with twists and turns and is melodious, thrilling and precisely good.

Klatwerk3 is the trio of pianist Boelo Klat, and Eye Opener is the fourth album of this remarkable trio and the first with bassist Ruud Vleij. The album was created thanks to crowdfunding, and it is also the best album that the trio has recorded so far, because Klat seems to get better with every album.

As a composer he is also extremely well underway again, with eleven sublime compositions, supplemented by two short pieces by drummer Ancel Klooster and double bassist Ruud Vley. The album starts and ends with a cover – the opener is an almost unrecognizable Piano Man by Billy Joel, the ending is the well-known Moon River. Klat knows how to completely manipulate both pieces, in a way that you can only listen to with admiration as a listener.

But it is not only those covers in which Klat and associates show that they are of international top class. Calling a song like New York sparkling, for example, would do it seriously – it is a composition that immediately settles in your memory (which incidentally applies to many more of Klat’s compositions) and which immediately gives you a good mood. This has to do with that sparkling, but also with the smooth, smooth way of playing of Klat and his sublime accompanists, who everywhere find the perfect balance between tension, a light stubbornness and delicious melodies.

You could think of Walk like Monk as a tribute to pianist Thelonious Monk, but the piece is more cheerful and accessible than much of Monk’s music, while at the same time it is just as ingeniously constructed. That is great, and it also indicates what makes Klatwerk3’s music so attractive. We have heard someone say: “I don’t really like this kind of jazz piano piano at all, but this is a lot of fun!”, And after listening twice: “I believe this is becoming one of my favorite albums! ”

Ingenious, intelligent, slightly unruly and always very exciting jazz, which is played smoothly and fluently and which you immediately suck, that is the music of Klatwerk3, and on Eye Opener you get no less than five quarters of an hour without even a weak moment. An absolute must!


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Aliud Records 96 albums

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