The "Horst-Wessel-Lied" ("Song of Horst Wessel"), also known as "Die Fahne Hoch" ("The Flag Raised"), was the official anthem of the NSDAP. The song was written by Horst Wessel, a party activist and SA leader, who was killed by a member of the Communist Party of Germany. After his death, he was proclaimed by the NSDAP a "martyr" and his song gained widespread popularity among the party followers.[3]