F major (or the key of F) is a major scale based on F, with the pitches F, G, A, B♭, C, D, and E. Its key signature has one flat. Its relative minor is D minor and its parallel minor is F minor. F major is the home key of the English horn, the basset horn, the horn in F, the trumpet in F and the bass Wagner tuba.
The answer is both. Despite most of Duchamp's work was a sort of spoof (including "N*ude Descending a Staircase"), the consequences of his trajectory represent a critical watershed in the History of Art.
