Round songs are songs that you can have multipple different people or groups singing the same song at different parts. Some include frere Jacques and row row row your boat. For example when one group would finish singing the others would continue so if one person sang, "row row row your boat gently down the stream," the next person would begin as the first person started the next line.
There are some famous songs that use this form in them. Some of the examples include "Dig Me," "Minimalism," "A Horse With No Name" and "The Enigmatic."
ewan ko ?
tip toe through the tulips
happy birth day po
Usually a song contains more than one instrument for the back round. Which chords cannot play.