Funeral March of a Marionette, played on a music box!
Gounod's piece, the Alfred Hitchcock Presents theme: 1,642 notes, all piano, about 4 minutes 49 seconds a lap. Arranged from a 1900 printed edition; that scan was rough, so some inner chord notes, especially in the trio, are a best reading. Every lane climbs 38 floors, so Vertical Construction needs to be maxed.
Paste it at yaw 0 or 180, with the paste row between -80 and -45. Drop exactly 7 items in the box at the start, then place a satellite substation on the gate row at the south end to start the song. It loops as long as the substation is there; lift it after the last note and every lane parks at its gate.
The gates need their own power; the print powers everything else.