. . . . "Numena"@en . . "3194.0"^^ . . . "Numena (1987) is an album by the American ambient musician Robert Rich. This is the most active solo album Rich had released by this time. It features the use of a variety of acoustic percussion instruments and just intonation for the first time in Rich\u2019s career.The longest and most complicated track on the album is a piece called \u201CThe Other Side of Twilight\u201D."@en .