What is a song that strophie?

A song that is strophic is a song in which each verse is sung to the same music. This is in contrast to a song that is through-composed, in which the music changes for each verse. Strophic songs are often simple and easy to sing, and they are often used for folk songs, hymns, and children's songs. Some examples of strophic songs include "Old MacDonald Had a Farm", "Happy Birthday to You", and "The Star-Spangled Banner".