‘Look, look deeply! And let yourself be carried away fully by what the gaze makes resonate inside you, like someone who goes to a concert with a new suit and an open heart. […] Learn to look as if you were going to a concert. Music is a composition of sound forms in time. Painting is a composition of visual forms in space.’ In 1967, Antoni Tàpies wrote this text for a children and young people’s magazine, with this dedication: ‘To my young friends at Cavall Fort.’ It was a reaffirmation of his love of music, which he considered as spiritual as painting. Years earlier, in 1950, he had already painted "Spiritual Song". Created at a time when, as a member of "Dau al Set", he was practising a clearly magic form of Surrealism, it features staves, musical scales and dissonant trumpets that configure a musical landscape. Tàpies knew that the universe of sound, besides being the most complex of the arts, also offers direct access to the soul.