With great cooperation between the Americas, two US improvisers — pianist Marilyn Crispell and drummer Lesley Mok — join with Argentinean tenor saxophonist Camila Nebbia for set of free-form improvisations.

Without any preset ideas, the pianist, drummer, and saxophonist immediately clicked, propelling eight transformative tracks. That should come as little surprise, however, since Crispell — best known for her tenure with Anthony Braxton — along with the younger Mok, who has worked with Myra Melford and Anna Webber, and the now Berlin-based Nebbia, who has collaborated with everyone from John Edwards to Han-earl Park, are fully conversant with the vocabulary and demands of pure improvisation, meeting its challenges with remarkable ease.

Free form doesn't mean formlessness, and throughout the disc's selections, balance between inspiration and continuation is maintained. What's highlighted as well is constant timbral surprises. So, for instance, a track like "Spirals" matches a tough drum backbeat with lyrical and shaded keyboard riffs as the saxophonist uses key percussion, double tonguing and reed bites to extend blues emotionalism.

As further proof of synergy, Mok's cymbal scrapes and protracted rolls and Crispell's keyboard comping and cushioning are as much part of advancing the interpretations as Nebbia's vibrated scoops, irregular smears and pointed tongue stops. If the saxophonist's decided expression of guff split tones, tongue flutters and repeated honking patterns seems limitless, it's because they're balanced by anchoring piano motifs from all parts of the keyboard or textural cushioning. On atrack such as "Suspended Time", this creates the perfect response to the saxophonist's note-bending and sliding buzzes, confirming the track's creative narrative.

Additionally, especially on the extended opening track "Driving Through Flood Water", Mok's clashing cymbals and dynamic drum pumps introduce and sustain the music's undulating theme, even as Nebbia's ascending, quickening tremolo timbres threaten to subversively blow it apart.

The often-unexpected fusion of Nebbia's gravelly aviary trills, Crispell's holding a thematic outline even as she slaps and pumps variations, and Mok's ruffs and rebounds, make for a notable creative music alliance.