BARCELONA - Video installations and electronica are entrancing the heaving dancefloors this weekend in a top Spanish festival fusing music, technology and the visual arts. Barcelona’s Sonar festival, which started on Thursday and runs until Saturday, features a premiere of a new album by British electronica duo The Chemical Brothers. Veterans of the 1980s British New Romantic scene Duran Duran will also take to the stage on Saturday night.

But the music is largely upstaged by the accompanying video installations and light shows.