The period scenographies by the photographer Lejaren À Hiller are at the centre of the image of Sónar 2007. Lejaren's magnificent series shows the History of Surgery through the ages, using an expressionist and theatrical treatment of light, a pictorial composition and a taste for veiled eroticism.

However, if we look closely, we can see the presence of an intruder in each of the scenes

Smiley, the icon par excellence of late eighties acid music, has gatecrashed the History of Surgery, like the joker who stands behind the TV news correspondent and makes faces. Smiley returns but does so in an absurd way, in a context where it does not belong. The Sónar 2007 image seems to highlight the pointlessness of all returns, whether to the past or the future, and leaves the viewer with more questions than answers.