What happens when a mini-orchestra performs the Mad Men theme song, gently mashed up with Nat "King" Cole's classic "Nature Boy"? Awesome jazz fantasticness. Also be aware -- it's performed in a single take, with no cuts or overdubs. BEHOLD:

Educational note: the Mad Men theme is actually an edit of "A Beautiful Mine" by RJD2. Huh. You learn something new every day, right? Here's how the band (apparently called Videos Recorded Live) describes the track:

We loved the song "A Beautiful Mine" by RJD2 that plays during the opening credits of "Mad Men." We wanted to put lyrics to it and realized that "Nature Boy" made famous by Nat King Cole, and written by eden ahbez, was the perfect fit. This was filmed in one take (this one, specifically, happened to be take 29 of the day)...no cuts, dubbing, lip-syncing or auto-tuning. More videos coming soon...This is a Video Recorded Live.

Vocalist: Allison Williams
Director: Ralph Arend
DP: Vincent Peone
Editor: Ralph Arend
Composer: Jay Wadley
Sound Mixer: Raphael
Producer: Josh Ruben
Producer: Erika Hampson
Line-Producer: Nick Uhas
Steadicam Op: Yousheng Tang
Gaffer: Corey Fontana
Grip: Jason Beasley
Grip: Leo Schott
AC: Andrew Brinkman
DIT: Kali Riley
PA: Roland Da Rold
PA: Suzie Jozkowski
PM: Jordan Hall/Elefant Films
Art Director: Andy Myers
Prop Master - Thor Foss
Scenic - Jen Dunlap
Set Dresser - Bennie De Grase
Set Dresser - Luc Grusen
Flute: Roberta Michel
Celeste: Trevor Gureckis
Violin 1: Pauline Kim
Violin 2: Marissa Licata
Viola: Meena Bhasin
Cello: Jessie Marino
Bass: Zack Lober
Drums: Colin Stranahan
Congas: Jay Wadley

See also: "Nature Boy" performed by Pomplamoose, Kurt Elling, Miles Davis, and of course Nat "King" Cole.

(Via Cal Henderson.)