What exactly is a ‘rainbow connection’? And is it as fast as fiber?

“Some day we’ll find it, the rainbow connection, the lovers, the dreamers, and me.”
In 1979, Paul Williams and Kenneth Ascher composed “The Rainbow Connection” [midi] which served as a radio hit and song for the The Muppet Movie. It was nominated for an Academy Award and reviewed
in the allmusic guide as a song in which “Kermit the Frog sings with
all the dreamy wistfulness of a short green Judy Garland.” Enclosed are
some performances of it I hope you enjoy.

Kermit the Frog – Original Movie
Debbie Harry on the Muppet Show
The Dixie Chicks
Willie Nelson
Jason Mraz
Sarah McLachlan
Kenny Loggins
Me First and the Gimme Gimmes
Dresden Dolls – Live
Jamie Leonhart
John Michael Higgins in an acapella version
Heartland Men’s Chorus

I tried to cross a span here, but if I had to pick favorites you might
be surprised with what Jamie Leonhart and Kenneth Ascher later did
(with the cast of The Break-Up — John Micahel Higgins et al)

Oh, and my favorite
version – an on-the-prowl Andy Bernard (Ed Helms) singing it, in a sexy
high falsetto voice, accompanied by the banjo, in pig latin.