For instance a handclap in front of the staircase of the El Castillo pyramid is followed by an echo that resembles the chirp of a quetzal as investigated by Declercq.
Nico | Nico Roozen | Nico Muhly | The Velvet Underground & Nico | Nico Rosberg | Nico Mattan | Nico Mastorakis | Nico Dostal | Nico Zimmermann | Nico Stehr | Nico Salva | Nico Klopp | Nico Gardener | ''The Velvet Underground and Nico: A Symphony of Sound''
From left to right: Lou Reed | Nico Weißmann | Nico Thomas | Nico Smith | Nico Siegrist | Nico Santucci | Nico F. Declercq | Nico B. |