In the 1920s, Villa-Lobos also met the Spanish classical guitarist Andrés Segovia, who commissioned a guitar study: the composer responded by writing a set of twelve such pieces, each based on a tiny detail or figure played by Brazilian itinerant street musicians ("chorões"), transformed into a "étude" that is not merely didactic. The music of chorões also provided the initial inspiration for his "Chôros", a series of compositions written between 1920 and 1929. The first European performance of "Chôros No. 10", in Paris, caused a storm: L.Chevaillier wrote of it in "Le Monde musical", "[...it is] an art [...] to which we must now give a new name."