The angel as a symbol of the tango-dance, death, and resurrection. Without losing the romance, the violence, eroticism and devotion of the traditional tango that he saw as empty and hollowed out, Piazzolla renewed and modified it with elements of European art music, Argentine folklore and jazz, and thus tango took on a new meaning and shape. The writer Alberto Rodriguez Munoz approached Piazzolla in 1961 with a request to write music for his play Tango del angel, which is about an angel appearing in an apartment block in Buenos Aires to cleanse the souls of it's inhabitants. The titles Introduccion al angel, Milonga del angel, and Muerte del angel were created. The latter, a four-part fugue with hard, uncompromising harmonies and rhythms, impressively shows how far Piazzolla pushed the boundaries of traditional tango. When they play was performed in 1962, even the previously hostile parts of ht emusical public in Argentina had to admit how fitting and successful this music was and the titles, especially Milonga del angel, gained extraordinary popularity. The motives of Angel and Diablo appear in many of the tangos composed by Astor Piazzolla: "In my story, angels and devils mix- you have to have something in everything."

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Isabelle van Keulen is a top Dutch violinist who performs all over the world as a soloist and in chamber music ensembles. She heard an Astor Piazzolla LP at the tender age of six, and has been a tango music lover ever since. Isabelle has long wanted to play this music in an ensemble, and now her dream comes true with not only an SACD but also a DVD and Blu-ray, which both include a moving film by director Hans Pannecoucke as well as a behind-the-scenes documentary on the project.

The Isabelle van Keulen Ensemble was initiated in 2011 by the internationally well established violinist and violist Isabelle van Keulen, following her Carte Blanche concert series in the Concertgebouw Haarlem, the Netherlands, with the purpose to perform Astor Piazzolla’s Tango Nuevo masterworks to the highest technical and musical standards.

Together with bandoneonist Christian Gerber, he himself one of the leading performers of his generation, and winner of several prizes such as the Deutsche Schallplattenpreis, pianist Ulrike Payer, well known for her versatility and sensibility in all musical genres and double bass player Rüdiger Ludwig, a charismatic musician and Co-Principal of the NDR Orchestra Hanover, they overwhelmed their audience on their first appearance. The present release features Piazzolla’s Variations on Buenos Aires, in collaboration with dkn, the Deutsches Kammerakademie Neuss, van Keulen's string orchestra.

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For the Dutch violinist Isabelle van Keulen, this recording, released by Berlin Classics, is a matter of the heart: in 2011, together with the bandoneonist Christian Gerber, the double bassist Rüdiger Ludwig and the pianist Ulrike Payer, she founded the Isabelle van Keulen Ensemble, with which she focused on tango nuevo and, above all, music by Astor Piazzolla. The classically trained violinist had always enjoyed crossing supposed genre boundaries, thus leaving the comfort zone of a classically trained and renowned violinist, at home on the concert stages of the world. Since 2019, she has also been artistic director of the German Chamber Academy Neuss, where she combines solo playing and direction from the concertmaster's podium.

So now a little homage to Astor Piazzolla. On the CD, “Piazzolla: Variations on Buenos Aires” she brings her two ensembles together. It is easy to imagine that this is not easy to implement - especially for classical musicians - since tango is not exactly part of the repertoire of orchestral musicians in training and everyday practice. But here the musicians of the German Chamber Academy Neuss surprise, or are simply strongly influenced by their artistic director. With the combination of a typical tango ensemble and a classical string orchestra, van Keulen shows through the line-up what was also typical of Astor Piazzolla and his music: although influenced by the tango from birth, the composer felt deeply attracted by so-called Western classical music. These references can also be heard in the pieces recorded here: Tres minutos con la realidad reveals echoes of Stravinsky, and his suite Silfo y Ondina shows his admiration for Bach.

The arrangements that can be heard here were created by bandoneonist Christian Gerber, taking into account the special requirements of the larger line-up. So he sometimes distributes the music only to the extended voices, or to added opposing voices; he even precedes the very well-known Oblivion with a bandoneon introduction. With this type of editing, Gerber and thus this recording are entirely in the tradition of Piazzolla, who in turn repeatedly adapted his own works to suit possible changing needs.

The selection of Piazzolla's pieces ranges from relatively unknown ones such as the above-mentioned Bach-like suite, but also such catchy tunes as Oblivion or the touching Adiós Nonino can be found on the CD. The successful collaboration of Isabelle van Keulen's two ensembles creates a successful combination between classical music and tango - something that Piazzolla always strived for. Thanks to the brilliant playing of the typical tango ensemble, this slightly different version of the works loses nothing of the typical tango sound.

-- Klassik Heute

A series of high-quality concerts launched the success story of the Isabelle van Keulen Ensemble, which has since become well established on international concert stages and festivals. The subsequent recording of three successful albums testifies to the success story, the vast repertoire, and the versatility of the ensemble. From the very beginning, the Isabelle van Keulen Ensemble has been dazzling its audiences through its depth of musical expression, its technical brilliance, and the simultaneous mixture of melancholy and severity which is so typical of the Tango Nuevo, pairing great joy in playing with intimacy.