In 1893 Andersen was forced to resign his job because of a paralysis in his tongue and travelled then back to Copenhagen where he was employed as a composer. Among other pieces he was the composer of concerts in Tivoli Gardens. In 1897 he founded an orchestra school and was, until his death, leader and professor in conducting at the school. In 1905 he was knighted by king "Christian IX of Denmark" to the "Order of the Dannebrog ". He played on flutes of simple systems, although many of his pupils, among them the famous flutists Emil Prill and Ari van Leeuwen, played on flutes of the Böhm system.
