Get the original LP "Matching Tie and Handkerchief" (Arista Records 1973).
Put it on side 2. Of course, since it's Python both sides are labled side 2 but one has the designation "SB".
Start the album, listen to the opening of the first skit.
Then, restart the album. You may have to lift and place the stylus a few times before you hit the parallel groove, but when you do you will a completely different track. This runs through the whole side.
I had this album for months before I heard the third side. I never could figure out why the second side seemed so much shorter than the first.