The Aquatic Scourge brings us Outcast of the Sulphurous Seas, a significantly calmer and more techno-sounding remix of the Desert Scourge's theme, which is fitting for a creature belonging to the same species as it, but one that isn't desperate to kill you.Left Alone, the Brimstone Elemental's theme, is a beautiful and rather depressing sounding track, with a lot of emotion behind it befitting the Elemental's tragic fall from glory.Antarctic Reinforcement, Cryogen's theme, is a somewhat calm piece with various icy-sounding chimes, yet it has a hint of instability and a sudden drop near the end, as fitting for the deceptively calm boss fight.It actually incorporates parts of Hive Mind and Perforator's respective themes, fitting for how the Slime God is both Crimson and Corruption. Return to Slime (again, featuring SixteenInMono), the Slime God's theme, is an alien-sounding epic piece perfect for the penultimate boss of pre-Hardmode.On the other hand, the Hive Mind brings us The Filthy Mind (also featuring SixteenInMono), a heart-pounding song that starts with a feeling of emptiness and despair before swelling into an awesome, climactic piece that gives the feeling of fighting a fundamental evil.A heavy-metal, foreboding and intense song, the guitars, alien-sounding noises and distorted screams capture the very wrongness that is the Crimson and the Perforator Hive, all while giving you a sense that you can defeat this monster. Blood Coagulant (featuring the artist SixteenInMono ), theme of the Perforators.A pumping, electro-dance song just as psychedelic as the Mushroom Biome and the giant mushroom crab itself. Guardian of the Former Seas, Desert Scourge's battle theme, has a melancholic vibe for the once-great ocean worm, yet still has a heavy-metal motif to remind you that this is the first boss of Calamity, and as such won't be messing around.The theme of the Astral Underground biome, Treasures Within the Abomination, takes the motif from the base Astral theme and turns it into a smooth and slightly oppressive synthwave theme befitting the caverns and underground creatures transformed by the virus.The song is surprisingly relaxing despite the horrors of the infection, and the strings evoke a feeling of magnificence or awe - but it still has an undertone of danger to remind you that you're standing among a virus that has ravaged countless planets before yours. The Heaven-Sent Abomination, the theme of the Astral Infection Biome.An incredibly unnerving and eerie song that takes melodic cues from Hadopelagic Pressure, the quiet instruments and choir segments invoke a feeling of isolation and dread that warns you to watch for the oceanic monsters that could jump out of the pitch-black gloom at any time. void, the theme that plays when in Layer 4 of the Abyss.The Layer 3 Abyss theme, R'lyeh by RoverdriveX, sounds incredibly eerie and sinister - perfectly befitting the environment of a pitch-black ocean trench where how stealthy your are is your ticket to either survival or death.
A calm and somewhat desolate-sounding song that gives an "after the end" feel, fitting for a formerly pristine ocean irreparably desecrated by Yharim's rule.
It's a calm piece with an undertone of danger and death befitting the deadly monsters that stalk the ashen land, yet it still sounds almost tragic to emphasize its former grandeur and its subsequent ruination. The Profaned Crag sports The Step Below Hell.The concept theme of the Planetoids, Blessing of the Moon, though unused, is calming, tranquil, and provides a feeling of reassurance in the otherwise empty void of space.sanctuary, theme of the Sunken Sea, is beautiful, enchanting, and above all tranquil, perfect for the last remnants of the Sea King's realm.