Natural Artefacts – The Crux: Explorations in Jazz A point of departure for the author Per Anders Nilsson in this project is to investigate man–machine interactions. The improvisation group Natural Artefacts includes a mix of acoustic and electronic instruments. Is it possible to program electronic instruments, such as sequencers, samplers, and synthesizers in such a way that an organic “groove and feel” of jazz occurs? No one should however mistake the machines employed for human musicians. The author has composed a number of compositions that in different ways explore this avenue, with an aim to blend elements from diverse musical genres and traditions such as free improvisation, serial music, minimalism, ambient, electronica, and electroacoustic music. What unifies the players involved however, is their jazz back ground. With this new repertoire, comprising of new compositions and improv concepts exclusively created for the present line up, Natural Artefacts continue to explore new and yet unknown musical territories. The first edition of the Swedish improv group Natural Artefacts played regularly for more than 15 years. After a break, when saxophone player Ove Johansson passed away in 2015, the original members Susanna Lindeborg and Per Anders Nilsson created a second edition in 2018 together with the two young musicians Merje Kägu and Anton Jonsson on guitar and percussion respectively.