"Alexander Camaro met Sharoun during his student days in Breslau and again when they were both members of the Academy of the Arts in Berlin. Camaro, the distinguished painter and draughtsman, had already gained experience with leaded glazed windows through some of his previous work; now he became interested in the technique of embedding the stained glass blocks in cement. Using collage he composed large surfaces out of small elements, not on the basis of detailed preliminary designs on paper, but through various steps towards their realisation. Every stone was different, each one had to be numbered after it had been coloured (sometimes various times). It was impossible to determine exactly the effect that the correlation of the arrangement's colours and shapes and their light play would have. Only with artistic vision could one imagine it."
Rainer Höynck, in: 25 Jahre Philharmonie Berlin, 1988