It sounds like you've come across a video featuring (often associated with Rosi Bend ) performing their version of "Hubava Bulka" (Beautiful Bride), which is a popular song in the Bulgarian-Roma music scene.
: These groups are staples in the Bulgarian Chalga (pop-folk) and Roma wedding circuits. They are known for high-tempo accordion solos, synthesizers, and rhythmic percussion meant for dancing (specifically kyuchek ). qki_bend_i_rosi_bend_hubava_bulka_video_mechev_...
: Many of these "interesting" videos are recorded in places like Spain, Germany, or Bulgaria, where Bulgarian-Roma communities hold multi-day wedding festivities. It sounds like you've come across a video