1. Piper at the gates of dawn - 8/10 (1967)
This is where we get the first taste of the long instrumentals and stereo effects particularly in the track: "Interstellar Overdrive"
Also has the short version of "Astronomy Domine" Which is presented in it's developed form on Ummagumma.
2. Ummagumma - 10/10 (1969) Twin Album: First disk recorded Live at Mothers, Birmingham.
Track: Careful with that axe, Eugene. THAT Scream!
Second Disk: Studio album.
Track: "The narrow way"
3. Meddle - 9/10 (1971)
Track: "Echoes"
4. Obscured by clouds. 6/10 (1972) Music from the film
"La Vallée"
Not typical Floyd. Track: "Wot's ...uh the deal"
5. Dark side of the moon - 9/10 (1973)
I have the relatively rare SQ (Quadraphonic) encoded disk and the air crash is just amazing: The plane comes in from the rear speakers, flies overhead and then crashes right in front of you, then the sound echoes round to the rear again. Superb!
Track: "Any colour you like"
6. Wish you were here - 10/10 (1975)
Track: "Shine on you crazy diamond" plus the reprise on side two.
After that I didn't much like the wall and later works.
Trivia: A sample of instrumental part of Shine on you crazy diamond appears on the album Belief by Innocence, track: Natural Thing.