Composer Alban Berg (1885–1935) is best-known for his two operas, Wozzeck (premiered 1925) and Lulu (left unfinished but performed in incomplete form until the full premiere in 1979, as completed by Friedrich Cerha) and his Violin Concerto (premiered 1936). Berg’s oeuvre consists of his opi 1–7 and then, without opus numbers, pre-Opus 1 songs, incomplete pieces, and arrangements, added by archival and sketch study.