To celebrate its 50th year since bassist Barry Guy assembled the London Jazz Orchestra for its first 1970 performance on BBC Radio, the now multinational band convened in Poland in 2020 for a series of concerts at Alchemia Club and Manggha Hall in configurations of duos to quintets, culminating in a full ensemble performance of two magnificently powerful works: "Flow" and "Harmos-Krakow".

Released for their 50th anniversary, The LJCO, in configurations of up to 21 musicians including Derek Bailey, Trevor Watts, Evan Parker, Peter Brotzmann, &c., perform works by Kenny Wheeler, Barry Guy, Paul Rutherford and Howard Riley, captured live at the Berliner Jazztage in 1972; at Donaueschingen Musiktage in 1972; in the studio in 1980; and London's Round House in 1980.