You're working as a DJ in the overnight shift at WQXZ (The Mighty Q-104, The Rock of De Noc) during an era when radio stations when still locally owned, and DJs still picked out their own music, subject to a flexible formula crafted by an easygoing program manager.
At about 3:00 AM, you feel the urge. You gotta' go ... and bad. You also know it's not something where you can rush back and escape dead air if you've got a four-minute single playing, either; you've got to spend at least eight or nine minutes in the head; preferably longer. What do you put on the turntable before you go? Don't just pick out any old long tracks, but instead those you want to hear while you're "laying some cable out to the transmitter tower".
1) Pink Floyd: Pigs: Three Different Ones
2) Led Zeppelin: Achilles Last Stand
3) Rush: 2112 suite (technically, it's one long song)
Found the old 1980s-era bumper sticker.