"Carlo Mascolo is an improviser musician with different skills and versatile languages. He plays jazz, world music, computer music and the creative music in the direction of research of new sound textures, from solo to the ensemble. Carlo Mascolo is the founder of the "Kerlox Dynamic Band - transcultural music" and he has been playing with the collective Embryo since 2006. He is the art director of the Free Flow Festival in Italy since 2012. As educator, he was teacher of Jazz Trombone at the Conservatory of music "Nino Rota" in Monopoli (Italy) and teacher of Brass at the ESNCM in Jerusalem, at the AlKamandjati music center and in the refugee camp of Al-Amari, Qalandia, Jenin and Nablus (Palestine) . He played in several festivals and many clubs in Europe and worldwide (Italy, Germany, Spain, Czech Republic, Belgium, Holland, Turkey, Palestine, Morocco, Colombia, Argentina, U.S.A., Portugal) with Embryo, Christian Burchard, Michele Lomuto, Gianni Lenoci, Steve Potts, Antonello Salis, Marcello Magliocchi, Mik Quantius, Lothar Stahl, Jens Pollheide, Lori Goldston, Nicola Guazzaloca, Suricato, Pacho Davila, Moktar Ghania, Allen Blairman, Yuri Parvenov, Abdul Moimeme, Yedo Gibson, Vasco Trilla, Jean- Marc Foussat, Luiz Rocha, Nicolas Chientaroli, Dirar Kalash, Mia Zabelka, Carlos Zingaro, Ada Rave, Renato Ferreira, George Hadow, Paulo Chagas, Okay Temiz, Hakan Ali Tocker, Marshall Allen, Charles Gayle and many others."

Joao Madeira: "I was born in Lisboa and I've dedicated most of my energy to the doublebass since I was 12. When I went to study at the Conservatório de Lisboa my role model was doublebassist João Panta Nunes, and lately my studies were oriented by Jorge Lee, at Cascais. I have a degree in Musicology, investigation work on Fado's candidature to World Immaterial Heritage by UNESCO, and coordination of the Music Department at INATEL/FNAT. Since 1999 I have a strong activity (studio and performance) in several styles and genres, but improvised music and original composition (whatever the style...) are the places where my musical language riches its higher satisfaction and plenitude. In the recordings you are about to hear it's me who plays all the instruments. My passion is at the simple act of artistic creation. For me, music is all about musicians and genuine expression! It doesn't matter the genre neither the instrument per si. In theater I have collaborations (musician, composer, actor) with Companhia do Chapitô and Artistas Unidos, amongst others. I also love books (...) I've studied aesthetics and Portuguese literature since I remember, and love to read and write poetry."

Italian drummer and percussionist Felice Furioso is a member of 4!