Hummel's"Marian Frescoes" captivate from the first bar, which introduces the Salve Regina like a fanfare. Hummel works masterfully with the organ and the Gregorian material of the three Marian antiphons of the Roman liturgy, allowing quotations to shine through, hiding thematic echoes in multiple paraphrased parts, introducing a cantus firmus , as it were, or powerfully introducing the chorale - as in Regina coeli, which immediately piles up chords over the opening solo pedal. Two festively moving movements exploding with chords frame the calmer, quieter Ave Maris Stella - all three movements are full of tension, dynamics and expression.

As the final event in the series of concerts celebrating Freiburg's 850th anniversary, Bertold Hummel (composition teacher at the Bavarian State Conservatory in Würzburg), a native of Freiburg, had his say with an attractive world premiere: lecturer Dr Hans Musch created Hummel's "Marianische Fesken" - Salve Regina, Ave maris stella, Regina coeli - in an interplay on the four Freiburg cathedral organs (admittedly from the central console). After one movement had already been presented earlier, the compositional intention was now fully realised in the cyclical relationship and contrast. Bertold Hummel binds gesture-rich, concertante language, often dialoguing, into a strictly structured interplay of forms; proportions and variable repetitions also facilitate access for audiences with a bias towards modern music - a moment in the work of a contemporary that cannot be valued highly enough. In addition, he knows how to select the instrument's resources in a targeted manner and how to colour the lines in a very personal way. The first impression is strongly "French", certainly directly influenced by the Paris State Prize year. In addition, the unique possibilities of the organs in Freiburg Cathedral, which sound "stereophonically" from four places, so to speak, are utilised. The composer and his accomplished interpreter Hans Musch are likely to have devised a maximum registration set-up for the premiere.

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Hummel transforms the Gregorian antiphon(Ave Maris Stella) with an improvisatory attitude into a clichéd, imaginative miniature. Tempo, time changes, colourful harmonies, cascades of chords in the pedal and main work, echo effects, melodic interjections and everything applied in a fresco-like manner: here Axel Flierl showed himself to be a master of interpreting contemporary works.

In the final triptych by Bertold Hummel, the significance seems to me to lie above all in the title "Frescoes", namely frescoes that realise in terms of sound what the contemporary designer of a church interior would perhaps also conceive in the form of frescoes: large sound impressions in strong colours, in between restrained colours and gradations and again and again in the original state or in modified adaptation to the colours the respective theme of a fresco, not actually a form-like sequence of graphic elements although strong lines shape the field of each fresco and are thereby guided by a certain improvisational hand. Viewed from the organ, these are large, fixed improvisations that breathe the spirit, structure and content of the three Gregorian chants with a very instrument-appropriate use of sound.

All three of these frescoes thrive on contrast, for example between rapid solo scrolls thrown down like arpeggios and dissonant chord progressions, which are then replaced by almost lyrical elements into which the Gregorian Salve regina is then incorporated as a thematic interlude, or they work with echo-like effects after a melody built on a tritone, or they are arranged in the bitonal technique, i.e. in the simultaneous pairing of different keys(Regina coeli), a work that, like the organ pieces by the French, offers plenty of opportunities to develop creative brilliance and surprising registration effects.

Reger continued after the pause for reflection with Joseph Bonnet's"Regina Coeli" from"Drei Marianische Fresken für Orgel" by Bertold Hummel. The musician, who was born in 1925, comes up with rebellious, rolling waves of sound, with dissonances that seem to dissolve in space. Strange bell-glass sounds over recumbent tones, torn, bold and wild climaxes, an aggressive roar lead to almost surprising calming in the very best major tradition.