Barry says a session was cancelled so instead he corralled Themen, Williams and Green, all of whom were available at short notice. And thank heaven, for this is a very classy affair indeed. ‘The Night Has A Thousand Eyes’ opens as a free-flowing tenor exposé, Themen shuffling his ideas as only he can, Barry laying down a tidal wave of drum effects. Williams, as ever, is not to be outdone, his improvisations like a cascade of unexpected twists and turns, Themen back in to finish.

Dexter Gordon's title track with its parade ground strut is immediately engaging, Green's purposeful walk allowing Williams to fly, occasional funky figures punctuating the flow, before Themen casts his spell, sinuous and mystical, with Rollins like an unseen guest, Green and Barry playing games.

‘Black Narcissus’ is a soprano feature, the tone a tad peevish, Williams thoughtful and pertinent, a mood that continues with ‘Prelude To A Kiss’, Themen back on tenor, almost reverential as he explores its time-honoured outline, Williams markedly un-Duke-like, as Green takes over. Themen's final solo is of the highest quality; Paul Gonsalves would have approved, I'm sure. Monk's ‘I Mean You’ is a stompier affair and all the more welcome for it. ‘Without A Song’ has Williams in imperious form, Themen tip-toeing around the melody, Green powerful in solo and support, Williams taking the chordal route home. Rollins’ ‘Solid’ is the toe-tapping closer to an impromptu four-star collaboration but its five-stars to label boss Andy Cleyndert for his production, design and photography. A shiny digipack to savour: good to look at and great to play.