|This article is written from the Real Life point of view|
The Ancient Chozo Ruins theme plays when first entering the Ruins, and in later portions of them close to the Hall of the Elders; this main Chozo Ruins theme retains the melody of Ancient Chozo Ruins, which is then heard again in Lava Caves (Burning Trail). When first heard, this theme remains quiet, ambient, and mysterious in tone. Once the Morph Ball is regained, a percussive drum beat is added to the Chozo Ruins theme, giving it a more upbeat vibe. Additionally, near the end of the track, a melody similar to the latter part of the Metroid Prime Theme is heard.
The Moth Temple Landing Site and Splinter Hive themes from Metroid Prime 2: Echoes both share the ambience and various sound effects heard in Chozo Ruins, especially the pre-Morph Ball variant without percussion. The Alinos theme from Metroid Prime Hunters uses a percussion rhythm that is nearly identical to the one heard in Chozo Ruins, but has a completely original melody and is not considered an arrangement.