Last weekend, the Metropolitano Stadium in Madrid was the scene of a massive concert by Alejandro Sanz. With a repertoire full of his greatest hits, the artist managed to gather 55,000 people for an evening that combined emotion and nostalgia. For attendees, the event confirmed that Sanz remains a central figure in popular music, offering a direct show that connects with the audience without artifice.
The sound engineering behind 55,000 live voices 🎤
Managing audio for a crowd of 55,000 people in an open venue requires precise technical planning. The sound system was deployed at multiple anchor points to avoid echoes and delays. Linear speaker arrays and condenser microphones with adjusted polar patterns were used to capture the artist's voice without interference from the audience. The mix was done from a digital console with real-time processing to balance low frequencies and avoid saturation in such a large space.
What Sanz did with 55,000 souls and a couple of ballads 🎶
While the engineers sweated to prevent any feedback, Alejandro Sanz simply sang Corazón Partío and the audience did the rest. 55,000 people singing in unison is an emotional achievement, but also a logistical nightmare for the sound crew. If someone had coughed at just the right moment, the delay system would have turned it into a choir of out-of-tune throats. Good thing respect for the artist outweighed the need to clear throats.