Recorded at the 2014 Ad Libitum Festival in Warsaw, pianist and composer Agusti Fernandez was invited to perform four concerts in celebration of his 60th birthday, choosing his working trio Aurora for once concert, a solo performance of "El Laberint de la Memoria", his electroacoustic Thunder trio, and a large ensemble conduction: "River, Tiger Fire".

Polish composer and recorder player Dominik Strycharski wrote these pieces in response to a work for the recorder by composer Louis Andriessen that he dedicated to Frans Bruggen: "Melodie"; Strycharski response is "Harmonie", performed in a duo with pianist Sebastian Zawadzki to demonstrate the impracticability of harmony in its purest forms.