Erik's Music Database - discography search: record label is Qualiton and performer is "Istvan Lukacs Sandor Burka" and nationality/style is Thrace and performer is "Petrana Pepa Koutcheva" and performer is "Yordanka Gabra Shopluk Ilieva" and performer is "Ivaylo Kaval Koutchev" and record label is Folkways