Konfederacja Absolwentów Szkoły Technicznej Artykulacji (K.A.S.T.A.) is a Polish hip-hop group formed in 1995 in Wrocław by Wall-e (Waldemar Kasta). Also known 3WKasta for collaborations with Trzeci Wymiar.
In 2002 they released a double disc album titled Kastaniety which included tracks in both Polish and English. After the release, donGuralEsko joined the group and in 2003 they released the second double disc album titled Kastatomy.
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