When Undo first started DJing in the early 2000s, his native Barcelona was flooded with gentle, melodic, and sensitive electronic music from across Europe. Gabriel Berlanga was captivated by these sounds and even as darker styles of music spread across the country, he never abandoned it. Undo has been a resident at Razzmatazz for many years, so there are few clubbers left in the city who haven't experienced his appealing universe of sounds. At Sónar by Night, this community minded individual is charged with warming up the dancefloor on Saturday.