As a fellow of the "Cité internationale des Arts", Bertold Hummel lived and worked in Paris from 1 July to 31 December 1968. He enjoyed the lively exchange with music and art scholarship holders from all over the world and kept in touch with the composers Marion Brown and Frank-Michael Beyer, whom he had met there, long after this time. Hummel's plan was to write a ballet opera based on Goldoni ("Corallina" or "The Bruised Cat" - an opera buffa), the libretto of which was written for him by his friend, actor, painter and director Luigi Malipiero. The diverse artistic stimuli of the avant-garde in Paris in 1968 and the threatening backdrop of the student revolts with their brutal police operations stood in stark contrast to the elaboration of this harmless text, which the composer obviously lost interest in after 625 fully orchestrated bars. Instead, he felt inspired by the New York jazz composer Marion Brown and the jazz saxophonist Gunter Hampel and premiered the joint "Conversation" in the "Cité" on 3 December. For French television, he improvised his "12 Scenes for Soniles" with the aforementioned jazz musicians on sound sculptures by the Swiss artist Eduard Johannes Stöcklin. The only work from this very stimulating study visit for Hummel that found its way into his catalogue of works is the Sonatina for violin and piano op. 35, which is one of his best-known works. The Elegy from it is the only musical idea that remains from his opera buffa.