Over the next few years, García Lorca became increasingly involved in Spain's avant-garde. He published a poetry collection called "Canciones" ("Songs"), although it did not contain songs in the usual sense. Shortly after, Lorca was invited to exhibit a series of drawings at the in Barcelona, from 25 June to 2 July 1927. Lorca's sketches were a blend of popular and avant-garde styles, complementing "Canción". Both his poetry and drawings reflected the influence of traditional Andalusian motifs, Cubist syntax, and a preoccupation with sexual identity. Several drawings consisted of superimposed dreamlike faces (or shadows). He later described the double faces as self-portraits, showing "man's capacity for crying as well as winning," inline with his conviction that sorrow and joy were inseparable, just as life and death.