Arthur Bull's "Concentrés et amalgames" is a captivating journey into the world of experimental jazz, released in 2006 under the Ambiances Magnétiques label. This album is a testament to Bull's innovative approach to guitar, collaborating with Daniel Heïkalo on drums, creating a unique blend of free improvisation that pushes the boundaries of traditional jazz. Recorded, mixed, and mastered by Heïkalo at Heïkalo Sound Productions in Nova Scotia, the album features a diverse range of tracks that showcase the duo's exceptional skill and creativity. From the intriguing "La solution de l’énigme" to the haunting "Elegy," each of the 11 tracks offers a distinct sonic experience, blending electric, prepared, acoustic, and classical guitar with dynamic percussion. The album's duration of 52 minutes ensures a comprehensive exploration of their collaborative artistry. "Concentrés et amalgames" is a must-listen for fans of experimental music, offering a fresh and exciting perspective on the genre.