[Ashy]

JJ Cale - After Midnight

 

[cer]

Jerry Goldsmith - Love Theme from Chinatown. Maybe even John Zorn's version of the same song if you count out the beginning. Unbelievably smooth sax.

 

[hotmath]

The Ink Spots - Java Jive
Actually most of Ink Spots' songs I've heard are on the smooth side.

 

[9pintube]

"SALSANATI BLUE"   By Latin X-Posure.......I Just pulled this old J.CURVE CD out that was of CINCINNATI JAZZ COLLECTION (VOL.3) The Blues.......UNREAL......You guys need to look up these disc from the J.CURVE LABLE.......sound damn good also....

 

[DDVX]

Listen to the Music - Chicago
 
 
It's always the first word that pops in my head when I hear that beginning guitar.

 

[hearjam]

Mel Torme:  "How Do You Say Auf Wiedersehen"
from the album "Top Drawer" with George Shearing on piano.
Incredibly smooth vocal intonation & control!
 

 

[Nick.W]

Jack Johnson - Better Together

 

[Asylum Demon]

While I haven't listened to much calm and soothing music (metal head here), personally I'd have to say either the last 3:18 seconds of the Halo song from the first soundtrack (Mix of a piano with a soothing but light chorus in the background to highlight the piano), or Andy McKee - When She Cries.
 
Now that I think about it though:
Ilaria Graziano - replica
Ilaria Graziano - Christmas in the Silent Forest
 
As for upbeat I can only think of one:
Yoko Kanno & Gabriela Robin - Cyber Bard

 

[MrProggie]

Moving & The Saxophone Song by Kate Bush.
These two songs are connected on The Kick Inside album.

 

[tmars78]

I see no one is a rap fan in here, or maybe no one thinks that rap music is smooth. I think "So Fresh, So Clean" by Outkast is a smooth song. And also Snoop Dogg's "Gz up, Hoes Down."

 

[eucariote]

My vote goes for Yacht Rock.
 
http://www.youtube.com/watch?v=pLFrzkTHP18&feature=related

 

[KingStyles]

Eva Cassidy - Imagine

 

[rhythmdevils]

kenny g

 

[MrQ]

Cocteau Twins  - Watchlar

 

[mbriant]

J.J. Cale - Crazy Mama
Chris Isaak - Can't Do A Thing ( To Stop Me)
Chris Isaak - Wicked Game
Donovan - Hurdy Gurdy Man