- This article is about the music track. For the ride, see Rambley's Railroad.
“ Welcome to Rambley's Railroad! I'm Conductor Rambley!
—Rambley the Raccoon
"Rambley Express" is the fourth track of the Chapter 1 OST of Indigo Park. It plays while riding Rambley's Railroad and is a four-part remix of the verse and refrain sections of "At Indigo Park" with a quick double-train whistle as the bridge between the two sections. Each part of the song is stylized to the mascot whose section of the ride is visited.
Starting off at Rambley's section, the song his heavily inspired by train-themed music, such as that heard in Thomas & Friends, and features train whistles in the first part more heavily than the rest. Mollie's part of the song is largely similar to Rambley's, with bird chirps replacing most of the train whistle sounds. Finley's part primarily utilizes an electric piano, sounding similar to the music of underwater levels in video games. Lloyd's part is the most drastically different, being played in dramatic big band fashion with horn beeps replacing the train whistle as the bridge.