I ran into amazing CD by the group Latcho Dives "Musiciens Manouche En Bearn" recorded 10 years ago. You can hear the CD at http://warmstuff.blogspot.com/2009/06/latcho-dives.html
Music and sound has flamenco influence. The band is made of Spanish-French border gypsys. Voices and the way they play has hypnotic affect on me.