One of the most important figures in present-day Danish music, because he industriously spreads his talents so wide: as composer, writer, music historian, conductor, professor, administrator and nor least organizer of festivals and concerts. Karl Aage Rasmussen's teachers included Per Nørgård and Pelle Gudmundsen-Holmgreen.
Karl Aage Rasmussen's works are virtuosic in execution, as are his analytical and historical writings about music. Rasmussen first made an impact with works he called music about music, where music by composers as different as Bach, Beethoven, Stravinsky and Berio were recomposed with provocative, conflictful results. In his later works Rasmussen turns the focus on the listener's experience of time. Worth slinging out among Karl Aage Rasmussen's works are A symphony in Time, Movements on a Moving Line for chamber orchestra, and the music drama Titanic.
Karl Aage Rasmussen's music has been perfomed in more than 30 countries. In 1991 he received the Carl Nielsen-Prize and in 1997 the Wilhelm Hansen Composer Prize.