Performer, singer, composer and improviser Christine Bertocchi trained in a variety of disciplines before working as a performer for several contemporary theater directors. Based in Burgundy she founded the company D'un Instant à l'autre in 2005, which she co-directs with Guillaume Orti and Didier Petit, and within which she creates her own works and participates in collective projects. She created Voie Ouverte with an improvisation choir and a vocal quartet, a project which was the subject of an educational DVD published by SCEREN-Canopé and the French Ministry of Education in 2009. She is currently preparing a solo, Imbrications, to be premiered in March 2025 at the Art Danse festival, in co-production with Le Dancing CDCN and Ici L'onde CNCM. Christine is also regularly invited by contemporary composers and writers (Isabelle Pinçon, Ghislain Mugneret, Sébastien Gaxie, Fabrice Villard, Pascal Charrier, Jean-Pierre Jullian), A Feldenkrais® practitioner, certified in Voice Anatomy and a trainer in vocal technique and improvisation, she teaches courses for professional artists in music and performing arts, or during training sessions (CFMI, CNFPT, Pôles sup, Afdas courses, Université Paris 8 - Département Danse, Université Paris-Cité, ESM à Dijon, etc.). In 2024, she completed a Master's degree in Musicology with a specialization in Dance at the University of Paris 8, writing a thesis entitled: "Cheminer en compagnie de Meredith Monk, en empruntant des parcours mêlant gestes et voix, à travers composition et pédagogie, with high honors.

Didier Petit was born in Reims in 1962 into a musical environment and began the cello at the age of six. He entered the conservatoire to study the instrument he was to research and work upon in the future. Thanks to his family, Didier was "swimming" in music from a very early age.In 1977, Didier walked out of the conservatoire, to find himself face to face with the world. At this time, he realises that music won't leave him and, feeling a tremendous desire to exceed both physically and mentally, he turns to jazz. Particularly inspired by Sun Ra and his Arkestra and Celestrial Communication Orchestra of Alan Silva in which he played for ten years, he studied at the IACP, became a teacher, then administrator until 1989. Though his friendship with Misha Lobko he was introduced to many european musical improvisers and shared numerous musical experiences with musicians of all over the World as Vladimir Tarasov, Iva Bittova, Daunik Lazro, Bruno Girard, Carlos "Zingaro", Roger Turner, Benat Achiary, François Tusques, Marilyn Crispell, Terje Isungset, Larry Ochs, Evan Parker.. Didier petit also played an important part in organising the festival "decades of improvised music" in 86, create the The WormHoles Festival in 2007. In order to set up something stable, he creates the record label In Situ in 1990 which now comprises 36 titles. An utopist and realist at the same time, Didier petit never loses the taste for risk and imagination. In 2009 he creat the East West collective in Hong Kong for the French May Festival to creat a bridge between two cultures. Since then he travel often in China.Since 2010, he is the artistic consultant for the Observatoire de l’Espace (the art science laboratory of CNES) and for the Sideration Festival. In October 2015 he has fligh with his cosmocello in the zero G plane to experiment music in zero gravity.

A versatile saxophonist, Guillaume Orti is active in the European scene since the early 1990s. He has developed his work in both composition and improvisation, as well as in exploring the relationships between music, dance and text. He has participated in numerous prominent avant-garde ensembles and organisations including Kartet, Octurn, Mâäk 5tet, MikMâäk, the Hask collective, Mercoledi & Co.

As a performer, he has toured extensively throughout Europe, as well as in Canada, Japan, and several West African countries. He has collaborated with Aka Moon, Marc Ducret, Gilles Coronado, Pepa Päivinen, Mark Haanstra, Stéphane Payen, Sylvain Cathala, Sarah Murcia, among others. From 2012 to 2014, he served as the artistic director of the European Saxophone Ensemble. Between 2007 and 2014, he also took part in several productions by the Fondation Royaumont, involving slam poets, traditional musicians, and European composers and improvisers from Mali and Morocco.

He is currently a member of Andy Emler’s MegaOctet, Kartet (Delbecq, Dupont, Ber), La Grande Volière (dir. Lionel Garcin), the FMR Orchestrâ (dir. Jérôme Lefebvre), the Jean-Pierre Jullian’s sextet, Not Only a Trio (dir. Adrien Desse), and the Denman Maroney quintet.

Within D’un instant à l’autre, which he co-directs with Christine Bertocchi and Didier Petit, he participates in and co-designs the following projects: D.U.O., À la croisée des voies, Chemins Sonnants, Twinning, Par cheminement, and leads his own project entitled …ence.

Involved in pedagogy since his youth, he has led professional training workshops in various contexts such as the company D’un instant à l’autre, ESM - Pôle Supérieur in Burgundy-Franche-Comté, CFMI Île de France - University Paris-Saclay, and is a permanent at the CRR 93 Aubervilliers-La Courneuve.