Hartmann, Johan Peter Emilius (1805-1900) Danish composer. Brief biography emphasizing his works in different styles and musical epochs with illustration from Dacapo Records. http://www.dacapo-records.dk/komponister/hartmann.html

Hartmann, Johan Peter Emilius Biography notes his connection with other composers in the family, credits his influence on Danish national opera, and lists major works. From the Grove Concise Dictionary of Music entry at WQXR radio. http://www.wqxr.com/cgi-bin/iowa/cla/learning/grove.html?record=4088

Johan Peter Emilius Hartmann (1805-1900) Vocal works with Danish lyrics from the Lied and Art Song Texts Page at REC Music. http://www.recmusic.org/lieder/h/hartmann.html

Paul Hindemith Filmography linking films and television programs using his music with short biography from the Internet Movie Database (IMDb). http://us.imdb.com/name/nm0385519/