Why do Steely Dan songs sound so weird?

[Dennis S]

Are they using some sort of 11th or 13th chords or something?

[N-OS X-tasy!]

Actually, that's the wax buildup in your ears.

[lafinfil]

Take two self acclaimed jazz junkies and cross them with a couple of Lit majors
add drugs and sex and you get Steely Dan

[troywellbuilt]

http://en.wikipedia.org/wiki/Mu_major_chord

[Lux Interior]

I stepped up on the platform
The man gave me the news
He said you must be joking son
Where did you get those shoes?

[Seacrest]

http://en.wikipedia.org/wiki/Recreational_drug_use

[DaviDC.]

Weird is never a word I would have applied to Steely Dan tunes.
Listening to an entire album, they all start to sound the same to me by the end.
But never weird.

[OWC Jamie]

weird = extra ordinary

[Seacrest]

Maybe it's the Cuervo Gold?
The fine Colombian?

[Donkey Hotay]

The magic mushrooms?