A passionate heart
Cannot help but share its joy
Gladness overflows
Refreshing the spirit like
A fountain in summertime

Link: progression of the idea of superlatives: echoing to overflowing.

Kansas City, near which I live, is called “The City of Fountains”. They are to be found everywhere here, even out in the suburbs. Medieval Japanese poetry did not utilize fountains much–brooks and streams are more commonly found. However, I wanted to reflect what I see around me, so I chose to use fountains instead.