While the terms 'refrain' and 'chorus' are often used interchangeably, 'refrain' may indicate a recurring line of identical melody and lyrics as a part of the verse (as in "Blowin' in the Wind": "...the answer my friend..."), while 'chorus' means an independent form section (as in "Yellow Submarine": "We all live in...").
[2] Many folk and popular songs are strophic in form, including the twelve-bar blues, ballads, hymns and chants.
Examples include "Barbara Allen", "Erie Canal", "Michael, Row the Boat Ashore",[3] and "Oh!
Haydn used the strophic variation form in many of his string quartets and a few of his symphonies, employed almost always in the slow second movement.
Franz Schubert composed many important strophic lieder, including settings of both narrative poems and simpler, folk-like texts, such as his "Heidenröslein" and "Der Fischer".