No-res, a Symphonic Tragedy in Two Parts ( Catalan: Nothing, a Symphonic Tragedy in Two Parts), also known as No-res, an Agnostic Requiem (Catalan: Nothing, an Agnostic Requiem) is a cantata for choir, orchestra, narrator and magnetic tape by Barcelonan composer Leonardo Balada. This work was finished on 1974 and represents a soundscape in which the composer recreates the relationship between himself and his mother when the latter was dying, to whom the work is dedicated. The lyrics were written exclusively for this composition by French poet Jean Paris. This is one of the most relevant works from the avant-garde period of Balada.
This work was premiered on 1997 in Barcelona by the Barcelona Symphony and Catalonia National Orchestra, together with the Coro Nacional de España, and conducted by Lawrence Foster.