Favorite song to demo or test drive speakers?

What is the first song you played when you listened to your new system for the 1st time? 
Jennifer Warnes -- Ballad of the Runaway Horse from Rob Wasserman's album "Duets."  
Steely Dan - Babylon Sisters
Reference Recordings - Rossini Overtures - William Tell Overture
Joni Mitchell - Cotton Avenue
I'll check different genres to get a sense of the speakers abilities.

Peter Gabriel - Growing Up
The Pineapple Thief - Shed A Light
David Sylvian - When Poets Dream Of Angels
Donald Fagen - Mary Shut The Garden Door
Aimee Mann - Humpty Dumpty
D'Angelo - Untitled
Zap Mamma - Ya Solo
Alice In Chains - Would?

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As above David Sylvian "when poets dreamed of angels". The last section of the song will leave you looking left, right, and middle, at the 3 guitars positioned in the soundstage.  

But also The Blue Nile debut album (a walk across the rooftops). Lots of clarity of instruments to feast on.

Mark Hollis - Inside looking out. You feel right up close in a small room with the artists. You can hear the chair creaking as he leans forward to play the guitar. The drawing of breath before singing. The realism should leave you captivated.

Also for low bass I try the song Before Today -Chicane Remix by Everything but the Girl. There is some low beats that come in around the 1minute mark and repeat a few times throughout the song. Some speakers will not even make a sound. I judge the loudness of those beats compared to the rest of the song as a bass test.
I'm not mad on bass by the way. 
Night Train - Christian McBride
Harlam Nocturne - Max Greiger
In a Sentimental Mood - Zoot Sims
Steely Dan : Aja
Grover Washington jr. : Winelight
Sarah Mcloughlin : Angel
Manhattan Transfer : Mystery
Matte kudasai/ king crimson
eyes without a face/ billy idol
hotel womb/ the church 

that’s just a few. 
Clark Terry: Portraits SACD   Carrie Newcomer: The Slender Thread SACD on Stockfisch   Katherine Bryan: Flute concertos on Linn Records
Pierre Moerlen's Gong - Time is the key, for high frequencies. Tommy Bolin - Private eyes, for low frequencies.
Supertramp - Brothers in arms, for overall sound.
All vinyl.

Correction, Supertramp -Brother where you bound, also use Dire Straits - Brothers in arms, hence the confusion. Second side only, first side reeks of commercial.
"Superstition" by Stevie Wonder, followed by Gordon Lightfoot's version of "Me And Bobby McGee".
Eva Cassidy - from 180 g Songbird album - "Time is a Healer"

Jacintha - SACD - Rose in Spanish Harlem.

Just a Little Lovin’ - Shelby Lynne
Duende- Bozzio Levin Stevens
Bubbles- Yosi Horikawa
Some good ones already mentioned. A few odd ones that I used over the years. Pink Floyd Dogs
Depeche Mode Personal Jesus acoustic version
John Hiatt Feels Like Rain
Any drums recorded in the front hallway at Headly Grange . The best sound not recorded by John Bonham may be can’t get enough from bad Company’s debut record
Whenever I make a significant change I play Dave Brubeck & Tony Bennett live performance for president Kennedy in 1962. It touches all the bases. You are there, wonderful recording.
Grace Jones -Slave to the Rhythm 
Eagles - Hotel California (Hell freezes over Album).
Queen - Bohemian Rhapsody
Aaron Neville "Everybody Plays the Fool" (if the system has issues with male vocals you'll know it here)
Stevie Wonder "I Believe (When I Fall In Love)" (For the sub-bass synth line) A real LF workout especially for vinyl 
Jewel "Have a Little Faith In Me" (Or, just take the the whole 'Phenomenon' Soundtrack, almost every cut is reference-worthy)
Jackson Browne The Load Out/Stay (Listen for the feedback in David Lindley's vocal monitors on Stay @ 6:45 - the monitor mixer has them right on the edge, and doesn't panic, he just eases them off a few dB, and saved the whole cut - masterful work) 
Everclear "AM Radio" (If the system can upack the layers in this mix, it can handle anything) And while you're at it listen to their anthemic version of "Brown-Eyed Girl" 
Sonny Rollins "Saxophone Colossus" Any cut - pick one
The Mavericks "All You Ever Do Is Bring Me Down" Eee-hah!!
Charlie Haden & Pat Metheny "Beyond the Missouri Sky" 'Nuf said.
Paul Galbraith "Bach: Sonatas & Partitas" This couldn't be transcribed for a 6-string guitar - the finger positions were impossible - so he built a totally unique 8-string instrument with a second sound chamber, taught himself to play it, then transcribed and then played these 32 pieces. Just Amazing. And will test the midrange purity of any system.

Joni Mitchell - Don Juan's Reckless Daughter
Overture/Cotton Avenue

Pat Metheny Group - American Garage
(Cross the) Heartland

Duke Ellington - Jazz Party in Stereo
Malletoba Spank (or all of Side 1)
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Genesis - The Carpet Crawlers and The Lamia
Nils Lofgrin -Keith Don't Go (yes overplayed)
Buckethead - Super Human
Jim James - Exploding
Diana Krall - California Dreaming
Catriona MacKay - Swan LK 243
Mary Chapin Carpenter - John Doe No. 24
Monsters of Folk - Dear God...great bass

I have these and a few more on a Roon playlist labeled 'Test Tracks'

Stranglehold-Ted Nugent
Voodoo Chile-Jimi Hendrix
Cocaine-Eric Clapton 
Bolero-Jeff Beck
Dave Matthews - Grey Blue Eyes
Whitney Houston - Exhale (Shoop Shoop)
Quincy Jones - Body Heat
Queen - Bohemian Rhapsody
Dave Brubeck - Blue Rondo a la Turk
Bobby Hackett. “String Of Pearls.” Sides 1, Then Side 2. Tests everything I need to know.
Supertramp: "Bloody Well Right", the XTC album, "Apple Venus Part 1", Ocean Colour Scene: "The Riverboat Song"
News on an overseas Internet radio followed by whatever they played afterwards.

First song I picked: Elvis Presley - It’s Easy For You. Followed by Blue Eyes Crying In The Rain. Followed by the whole Moody Blue album.

If it couldn't play those well, I would take it straight to Goodwill. Luckily, there is nothing that does not play those well.
I have Two favorites:
"Makin' Whoopee" by Bradford Marsali from Trio Jeepy Album
"Concierto de Aranjuez" by Jim Hall from Album Concierto

First sound, if a TT is up:

Sweet Child, The Pentangle
...just because it's one of the first albums I own....still 9/10, too. *S*


Beat Box (Diversion One)....for the piano @ the end of it....
The Holy Egoism of Genius
....both of these: The Art of Noise

Cube 3.0 @ Creamfields 2019, Deadmau5
...loud, Please. *G*

I didn't say you had to agree nor like it.

Cheers, J