Achorus performance The Ebony. Steps Barefoot has emerged from the concert of the Kolobov Novaya Opera Chamber Choir. Stage director Aleksey Veiro defines this genre as a performance without a performance. This is an illusion of home music playing and singing for themselves. The performance is based on spirituals (religious songs and hymns of African-Americans) in all their diversity. The concert comprises the famous composer Moses Hogan’s arrangments and African songs from the repertoire of the internationally acclaimed Robert Shaw Chorale.