"Wordless Chorus" (My Morning Jacket)

My Morning Jacket is a curious band.  The moment you have them pegged for a hippy-shake jam band, they do a 180 and delve headfirst into experimental electronica.  That's until they swerve off-road into alt country territory before ditching the pickup truck for a Jeep Wrangler to cruise down the Sunset Strip with America and The Beach Boys blasting from two busted speakers.
Oh, and did I mention they also have an affection for Prince and post-punk, too?  
Yeah, well.  They do.
Out of all of their tours and detours, "Wordless Chorus" from the album Z (2005) may be the best song that MMJ's frontman Jim James has ever penned.  
It's a song about the creative process.   He's trying to write something new, and he checks with his spirit to see where it should take him.   He wrestles a bit with whether or not going with his instincts/feelings will pay off--probably both literally and figuratively.  But in the end, he decides that there's no other choice but to go with his spirit; that's the promise he made to himself long ago and the only way to keep moving and innovating.
And the final lines are James making a direct reference to the first track off their first album The Tennessee Fire (1999), "Heartbreakin' Man":
Come on, hey don't you know how we started
We forgot about love, but weren't brokenhearted
As the title of the song implies, the refrain of the song is indeed without lyrics.  It's simply James's multi-tracked voice, singing the most angelic ahhhhhhs and oooooohs, which sound like they were transcribed straight from the mind of a 21-year-old Brian Wilson.  That's before James suddenly channels Earth, Wind & Fire's Philip Bailey for a moment, jumping into an unbelievably high falsetto, before ending the song with a sly little reference to Sir Elton's "Bennie and The Jets."
As a songwriter myself, it's the MMJ/Jim James song that speaks to me most.