I've got several that tie for favorite; Fire by Aurthur Brown (crazy world of Aurthur Brown) and Heavy Metal by Dan Felder. There are so many really good songs that still give me chills when I crank up the sound It's hard to choose.

Scary Monsters -- David Bowie

Great song to show off your system

The Serpent Power-Endless Tunnel

Blue Cheer "Peace Of Mind" from New & Improved!

Blodwyn Pig “Dear Jill” and “Change Song”

Bobby Whitlock “Thorn Tree in the Garden”

Alvin Lee & Mylon LeFevre “On the Road to Freedom”

Ian Gomm. Hold On

Side B of Let it Be, You Know My Name, Look Up the Number.  Beatles

+1 more for Spanish Moon. Best song on the second best live album ever.

Nuclear Apathy Crack the Sky

Dire Straits - Industrial Disease from the Love Over Gold album

Atlanta Rhythm Section - Another Mans Woman from the Red Tape album, especially the bass solo.

Sheryl Crow

The difficult kind

👍

Brian Eno "Babie's on Fire"  Not very inviting but features Robert Fripp plays the most blistering guitar solo I have ever heard.

Little Feat "Spanish Moon" from the live album Waiting for Columbus, not the studio version

+1 soix 

Caves of Altamira - Steely Dan.  My 9-year-old son latched onto this one, and it quickly became a favorite of mine.

Cross-eyed Mary - Jethro Tull.  Maybe not obscure, as I was familiar with it in its day, but maybe not the most played Tull song out there.

OMG! I can't forget one of my new fave groups!

The Slambovian Circus of Dreams doing A Very Unusual Head!!!!

Check them out! They're from the Sleepy Hollow area along the Hudson and are fantastic live. Very original and impossible to categorize.

You want obscure?

How about Root Boy Slim and the Sex Change Band, Dare to Be Fat, You Broke My Mood Ring, Boogie Til You Puke. Great live band in the DC area years ago.

Also, Tonio K. just about anything off the album Life In the Food Chain but especially The Funky Western Civilization and H-A-T-R-E-D but the whole album is great.

"The Shape Of Things To Come" - The Headboys

*You, I" - The Rugbys

"Tula" - The Rumour

"Sleeping" - Dwight Twilley

Here’s another obscure Fleetwood Mac song from the Peter Green era Fleetwood  Mac.  Like Crying might be an obscure song, but Peter Green is playing Greeny, one of the most famous guitars in Rock and Roll history.

Free For All - Ted Nugent

Around the Pynth - Rod Stewart and Faces

When It Blows Its Stacks - Captain Beefheart

Whirly Bird - Silver Apples

Big Mama Boogie - Cactus

1880 or So (Rose of my Heart) - Television

Wild dogs-Tommy Bolin off of Teaser

You Make Me Feel Right at Home, Ted Nugent album, written by Cliff Davies.

SOFT MACHINE - 25 August 1968 Ce Soir On Danse

Kudos to UZJ100 for nominating McGuiness Flint’s - When I’m Dead and Gone. I found it on Qobuz and heard it for the first time since high school 1970! Unfortunately it became an earworm and I found myself humming the chorus all day until I went to sleep!

I noticed many songs described here were fodder back in the ‘underground’ FM radio days. Fascinating! 

My contribution is The Sad Cafe (Not the Eagles version) by Holy Moses!! -Also on Qobuz

@pointtrucking that's a real cool song ... but, I believe it was also a major hit.

I'm that old.          : )

Tommy James and the Shondells Crystal Blue Persuasion

This is basically the second Jeff Beck Group without Jeff. The first Hummingbird album was released in 75 while I was working at a record store and it has been a favorite ever since. This is the first song:

T.U.S.A. by the Masters of Reality, which was a Ginger Baker side band …

or She Got Me (When She Got Her Dress On)

Both from the same album called Sunrise on the Sufferbus.

If your bass is well grounded and solid you’re in for a treat, and get ready to Rock!

Fun thread!

Black Widow Lover by White Witch on the self titled album

You Better Realize on the This Time We mean It album by REO Speedwagon

both mid 70's works that I much like

Almost anything from Steely Dan but in answer to your query, hard to narrow down to one so here’s a random pick, from Caravan to Midnight by Robin Trower, I’m Out to get You. Nice little boogie!

"Throw Down the Sword" on the Wishbone Ash  "Argus" album.  Ted Turner and Andy Powell's twin leads are almost mesmerizing

The Confessor Joe Walsh

@jssmith, thanks for the shoutout! I'm glad to know that I'm not the only Trapeze fan here. (More cowbell please!!!).

I forgot to include "Red Shoes" by THE THROWING MUSES in my color themed choices of obscure or at least semi-obscure songs.

It's a toss up between:

Big Eyed Beans From Venus

And

Her Eyes Are A Blue Million Miles

Try Again from Supertramp. First album. 

 19-20-21  by King Johnson

Sails of Charon by the Scorpions (with Uli Roth)

The Buzzard by Armageddon 

Green is the Colour

Couple more

A favorite

@mitchagain Trapeze... the most underrated album of the 70's. I remember that nobody knew this album even back in the day. My pick would be the song Jury.

"Supper’s Ready" by Genesis

I hate to be that guy. But the state of present day rock is pretty bad if Supper’s Ready is considered obscure.

But I am not that guy, since there is an ongoing supply of great modern music.

But as a huge fan of prog, I can go way more obscure.

Since most prog bands did not have writing hits, or radio friendly songs, as a goal, the vast majority of prog, present and past, is obscure,

Back in the 70’s, prog rock from Italy was considered equal in quality, based purely on the quality of the music, so the list of brilliant obscure prog from Italy is long and deep.

Premniata Forneria Marconi - Dove...Quando, Impressioni di Settembre, Per un Amico

Banco del Mutuo Socorrso - Canto Nomade Per Un Prigioniero Politico, Metamorfosi

Arti e Mestieri - Articolazioni

I could seriously list dozens more Italian prog songs, that are the equal or near the equal of most of their Brit contemporaries.

And that is not even going into prog from France, Spain, the US, Japan, Canada, Poland, that was also at an extremely high level.

More current stuff:

Pain of Salvation - The Perfect Elemnt, Beyond the Pale, Inside Out / near brilliant Swedish prog-metal.

Riverside - Egoist Hedonist, Second Life Syndrome, Deprived (Irretrievably Lost Imagination) / Great Polish prog/prog-metal band.

Steve Wilson - The Raven That Refused to Sing, Luminol, Raider II

The late / great Chris Squire made a couple of great records outside of Yes.  One is his collaboration with Steve Nardelli on a Syn record titled Syndestructable.  Another I love is he and Steve Hackett got together to form Squackett which gave birth to A Life Within a Day. 

I know I have some, but they’re so obscure I can’t find them.  

"Loves Gone Bad"- The Underdogs.

ozzy

How obscure are we getting... some of these are obscure for a reason, lol.

Free, "Mr Big" off Fire & Water

The Modern Lovers, "Pablo Picasso" off The Modern Lovers

Blue Mountain, "Let's Ride" off Dog Days

Grant Lee Buffalo, "Mockingbirds" off Mighty Joe Moon

Hanne Boel, "Still Shines" off Outtakes

Ruston Kelly, "Blackout" off Dying Star

I dont know how obscure these are but they're no Saitisfaction, Purple Rain or Walk This Way... just my opinion

Hokus Pokus by Focus.