Czeisler CA, Richardson GS, Coleman RM, Zimmerman JC, Moore-Ede MC, Dement WC, & Weitzman ED. Brown married singer-songwriter Iris DeMent in November 2002. Infamous Angel is the debut studio album of American country music singer-songwriter Iris DeMent. The Trackless Woods is the sixth album by country and folk singer, Iris DeMent. Sing The Delta is the fifth album by country and folk singer, Iris DeMent. Iris Luella DeMent (born January 5, 1961) is an American two-time Grammy-nominated singer and songwriter. REM sleep was further described by researchers including William Dement and Michel Jouvet. My Life is the second album released by singer-songwriter Iris DeMent. All songs by Iris DeMent except as indicated. The second season uses "Let the Mystery Be" by Iris DeMent. The opening theme for all ten episodes is "Let the Mystery Be" by Iris DeMent. Smith Teamaker is now headed by his wife Kim DeMent Smith. The study of REM deprivation began with William C. Dement more than fifty years ago. First, to real estate developer and broker John Dement Parsons, whom she married in 1905. DeMent was raised in a Pentecostal household.