Telephone's Theme

The Telephone’s Theme is a song from the Splatoon 2 Octo Expansion. It is (as the name suggests) the theme for the Telephone (or Commander Tartar, although this theme is not used when this name is used)

Description
The full version of the song plays when interacting with the Telephone for the first time in the Deepsea Metro. When the player enters a cut scene with the Telephone after this while still in the Deepsea Metro, a different version of the theme plays with less instruments and a shorter loop. Interacting with the Telephone when not in a cut scene (simply walking up to the Telephone and interacting when in Deepsea Metro) will not play the track.

The song starts with strange sound effects, presumed to be what the Telephone sounds like. This song has very heavy use of synthesis instruments, however it does seem to use a trumpet-like instrument as well as percussion. Various radio signal sounds are heard, which are also used as an instrument to play the main melody throughout most of the track. Throughout the track, the drums play a constant, fast, repeating rhythm with the use of trills. Near the end of the loop, the drums are the only instrument to play, playing much more frequently and faster.