The idea here is a pair of songs (or a medley) on an album that you can't think of listening to without listening to the preceding or following song. Examples would be The Beatles' "Sgt. Pepper's Lonely Heart's Club Band" and "With a Little Help From My Friends" and Queen's "We Will Rock You" and "We Are Champions".

I've never thought of Led Zeppelin's "Heartbreaker" and "Living Loving Maid" as inseparable, incidentally, though I'm sure many radio listeners do.

journey - feeling that way - anytime

journey - lovin touchin squeezin - city of the angels

Boston: Foreplay / Long Time

The trick is to find those songs that are linked together rather than those that just naturally flow together back-to-back-to-back like Moody Blues, Tommy, Abbey Road, etc. I'm not sure how No Sugar Tonight/New Mother Nature and Ready For Love/After Lights fit in since they are already combined into single tracks. Likewise, I don't count the Space Intro into Fly Like An Eagle or Sirius/Eye In The Sky, because they're all the same song to me, despite being listed as separate tracks. With that in mind, here's what comes to mind:

Waitin' For the Bus/Jesus Just Left Chicago — ZZTop

Ballad of Dwight Fry/Sun Arise — Alice Cooper
Lord Have Mercy On My Soul/When Electricity Came to Arkansas — Black Oak Arkansas

Pink Floyd: Empty Spaces/Young Lust

Rush: 2112 pt I Overture/pt II Temples Of Syrinx (even though 2112 is 7 parts it's these two that are inseparable and have always been played live together-there's no way they'd play just the one)

The medley on side 2 of Abbey Road.

Any Pink Floyd after 1973.

Tommy

Quadrophenia.

Re: the Abbey Road medley, I tend to hear two medleys, one beginning with "Sun King" and the next beginning with "Golden Slumbers". Also, neither "You Never Give Me Your Money" nor "Her Majesty" strike me as being parts of those medleys.

Black Magic Woman/Oye Como Va--Santana
This Beat Goes On/Switchin' To Glide--Kings
Your Sister Can't Twist/Saturday Night's Alright For Fighting--Elton John

The entire Dark Side of the Moon transitions smoothly from start to finish, but the strongest pairing for me is "Time/Great Gig in the Sky" (also my favorites from the album). One just doesn't sound right to me without the other.

"Meeting Across The River" / "Jungleland" - Bruce Springsteen (from "Born To Run")

Rocks Off/Rip This Joint--Rolling Stones (Exile)

Detroit Rock City/King Of athe Nighttime World - Kiss. They've been separated live most of the time, but feel like they belong together.

"Sylvans Song/Dream of the Archer" from Little Queen by Heart.

chicago - call on me - mongonucleosis

graham nash - chicago - we can change the world

neil young - southern man - when the morning comes

The Hold Steady ~ "Constructive Summer"/"Sequestered In Memphis"

The Replacements ~ 'Waitress in the Sky'/'Swingin' Party'

Funeral For a Friend / Love Lies Bleeding - Elton John
Venus and Mars / Rock How - Paul McCartney

all Zappa tunes

Doreen/Goblin Girls
Oh No/Orange County Lumber Truck
Village Of The Sun/Echidna’s Arf (Of You)/Don't You Ever Wash That Thing

Ain't Too Proud To Beg / It's Only Rock N Roll - Rolling Stones

More Zappa

Don't Eat The Yellow Snow/Nanook Rubs It /St. Alfonzo’s Pancake Breakfast/Father O’Blivion /Rollo
San Ber’dino/Andy
Society Pages/I’m A Beautiful Guy/Beauty Knows No Pain/Charlie’s Enormous Mouth /Any Downers?
T'Mershi Duween /The Dog Breath Variations/Uncle Meat
Igor's Boogie, Phase One/Overture To A Holiday In Berlin/Theme From Burnt Weeny Sandwich/Igor’s Boogie, Phase Two /Holiday In Berlin, Full-Blown /Aybe Sea

Glad/Freedom Rider - Traffic

All Mod Cons/To Be Someone - The Jam

Renny,

I think you mean "(I've Been) Searchin' So Long" and "Mongonucleosis". However, all three songs were on Chicago VII, so it's an honest mistake. When I saw Chicago in concert six months ago, they were still playing those songs together.

Jim