"here's my story, let's take it line by line.... (i dont remember these lyrics)
i introduce myself
joyful playful is how i live my life
i am so happy

(pause)

then the rain came down, you and John (could be Shawn) splash around
for today came the rain and its pouring."

it starts slow and instrumental

the chorus goes "then the rain came down you would jump splash around just be careful you dont drown .... (something) and the rain is pouring

It's Rain Came Down by Lossy.