As a teacher of idea and liberal arts, Engel taught both Alexander and Wilhelm von Humboldt. He offered using the Berlin Academy of Sciences and was a co-director from the Country wide Theater at Berlin. Engel’s most important contribution to musical books was as an aesthetician. He likened the objectivity of tone-poems using the subjectivity within general expression. Regarding to Engel music lends itself easier to the last mentioned regarding the conveyance of concepts beyond music. Tone-poems had been only justified regarding music with phrases. “Musical objectivity” could just partially be performed for music can’t ever depict the items that you have feelings about.