"Ich hab′ mich ergeben" (English: "I have surrendered myself", lit. '"I surrender"'), originally titled "Gelübde" ("Vow"), is a German patriotic song. The text was written in 1820 by Hans Ferdinand Maßmann. It was one of the unofficial national anthems of West Germany from 1949 to 1952, when the "Deutschlandlied" was officially reinstated. Its tune is now used in the Micronesian national anthem.