The Song that Screams Prog

This was one of the first I brought home and it needed no effort or multiple spins to appreciate.  I was pretty much hooked from the start.  Song?  Any and all. 

The ones that start off with a bewildering array of odd time sigs and strange note progressions. A perfect example would be "Enneagram" by Egg.  

Prologue by Gentle Giant

Any time I listen to Ayreon I get the immediate thought, "This is what people who aren't prog fans probably assume all prog sounds like!" And that's kind of a good and a bad thing.

Pink Floyd when I was 10 and ELP when I 17 I knew I stumbled on different back then

For me it was ELP's The Three Fate. I was 13 at the time. A huge leap from Crimson and Clover and Spirit in the Sky which had occupied my ears previously.

My first introduction to prog, as I suspect it was for many of my age, was Dark Side of the Moon. The tune that hooked me, however, was Supper's Ready.

The Fountain of Salmacis Tarkus

Ok. Cool thread.

From the classic era. Genesis's The Musical Box. Lots of transitions and the song is very theatrical. Everything that Prog rock typically embodies only done extremely well. :)

From a more modern era (21st century) I gotta go with Dream Theater's The Glass Prison. This song is insane and screams Prog at me every time I hear it. The time sigs are nuts and the song constantly changes is tone, tempo and overall mood by being heavy, melodic and downright fantastic. I've always felt that The Glass Prison is a wonderful representation of Prog music in general. It has just about anything you want in a song. I was truly blown away when I first heard it. I was like 'what the f-- ck is this??'

For me, the opening Mellotrons of "In The Court of the Crimson King" got me hooked, instantly!  1969 or 1970, I was about 13.   I dearly loved the entire album, but this track grabbed me.  Giles' drumming is sublime....