Lens, method, change. Anamorphosis in optics is according to the Collins Dictionary an image or drawing distorted in such a way that it becomes ''recognizable only when viewed in a specified manner or through a special device''; in another sense ''the process by which such images or drawings are produced''; and in a third ''the evolution of one type of organism from another by a series of gradual changes''. One of two tracks so far through lens, method, and above all in the dealing with change in the intertwining hivemind mindset of four creative improvisers is to be heard ahead of Gentle Ghosts. Recorded live in Paris in the autumn of 2019 pianist Benoît Delbecq whose process also involves the manipulation of live electronics was last heard by this blog fine and mellow on Fred Thomas' enjoyable trad-jazz Wagner tribute Dick Wag. He is here in a very different style and context on his own composition, delving into an aching quite delicious free avant blues soundsphere and canvas. With double bassist John Hébert, here in the Formanekian mantle, the elegant Warne Marsh-ian tenor saxophonist Mark Turner and formidable free-jazz drummer Gerald Cleaver the effect is without fear of hyperbole a serene vision unwinding however much at times imperceptibly.

Benoît Delbecq 4: John Hébert, above left, Mark Turner, Benoît Delbecq, Gerald Cleaver. Photo: John Rogers. Gentle Ghosts (Jazzdor Series) is out on 25 June.