THE TOOL FAQ ( http://toolshed.down.net/faq/faq.html ) did say merkaba was the intro to sober

"This song is actually an extended intro to "Sober" which was played live on the 1997-98 tours. Then it got a name. You may recall from those shows seeing Maynard sit while the rest of the band gave birth to this screaming sound. "

and on the wikipedia page for Ænima ( http://en.wikipedia.org/wiki/Ænima )

it says that jimmy is the sequel to prison sex

"During 1996 concerts, Maynard told audiences that the song "jimmy" is the sequel to "Prison Sex", and how it's about getting through the abuse"

which supports my 3 album track list idea and also tells you those songs go together on the track list