A beautiful haunting Icaro sang/whistled by Wilder Palla Flores (Curandero and Jungle Guide), at an Ayahuasca ceremony I attended in the Amazon jungle of Peru.
The video I took was shot in the dark so I took 5 different Icaros from it and stitched them together to bring you this audio.
That sound you hear from approximately 10:44 to 13:00 is a boat going down the Ucayali River which is approximately 2 km away. The Delfin Lodge was used for the ceremony. No-one else was there except for our group of 8.
I don't understand Spanish so I'm sorry to say that I cannot translate this Icaro.
Enjoy.