Dedicated to all friends and especially the cavers and the people related to the protection and the maintenance of biodiversity and order in the caves. The idea of the concert occurred to me after i found that in the caves, after many years of research, (especially those, that are not passed by flowing water) the acoustics is incredible. It is absolutely clear from parasitic noises but there is a slight delay of the sound which additionally enriches it. The songs are authentic folklore and the accent is on the “miksolidiian” area of the southern Rhodope Mountains. The recordings are absolutely live, without any effects and the kaba bagpipe is in several tonalities according to the acoustic zones.