The "Headphone Concerts" were performed live by Spyra and guest musicians in a green house at "Little Garden of Sounds II" (2002). The musicians inside the green house and the audience outside in the garden were wearing wireless headphones sponsored by Sennheiser, and this was the only way to listen to the music during the "Headphone Concerts". - No P.A. or other loudspeaker system was used!

There´s also a CD with selected pieces from one of the "Headphone Concerts" that was released by the Polish Label "Wydawnictwo21" (http://www.wydawnictwo21.com/polski/oferta-aktualna_oferta.html)