Soundtrack

The soundtrack for Risk of Rain 2 was composed by Chris Christodoulou. It currently is an Early Access OST and will be released later on as a full OST.

Availability
The official Early Access OST is currently available for purchase on Bandcamp. Until the full release of the soundtrack, new tracks may be added and/or some tracks may be modified by the artist.

Track list
The album currently contains 17 official tracks:
 * 1) Risk of Rain 2 (05:24)
 * 2) Evapotranspiration (05:28)
 * 3) Thermodynamic Equilibrium (05:33)
 * 4) Disdrometer (06:49)
 * 5) Parjanya (02:54)
 * 6) Hydrophobia (02:46)
 * 7) Terra Pluviam (06:01)
 * 8) Köppen As Fuck (05:47)
 * 9) Nocturnal Emission (04:52)
 * 10) Antarctic Oscillation (06:59)
 * 11) A Glacier Eventually Farts (And Don't You Listen to the Song of Life) (05:09)
 * 12) Into the Doldrums (05:00)
 * 13) The Dehydration of Risk of Rain 2's Main Theme by the Composer Chris Christodoulou (05:24)
 * 14) The Raindrop that Fell to the Sky (11:51)
 * 15) The Rain Previously Known as Purple (07:54)
 * 16) Petrichor V (08:10)
 * 17) Monsoon 2.0 (Consoles Trailer) (01:32)

Integration
The tracks can be classified in two categories: the Stage tracks, used as background music when exploring a level, and the Boss tracks, used during a Teleporter Event. Boss tracks, just like Stage tracks, are tied to the stage they are played on and not to the Boss spawned by the Teleporter.

Stage Tracks

 * 1) Evapotranspiration is used on Distant Roost.
 * 2) Disdrometer is used on Titanic Plains and Scorched Acres.
 * 3) Parjanya is used on Bazaar Between Time.
 * 4) Terra Pluviam is used on Abandoned Aqueduct and Abyssal Depths.
 * 5) Nocturnal Emission is used on Wetland Aspect.
 * 6) A Glacier Eventually Farts (And Don't You Listen to the Song of Life) is used on Void Fields.
 * 7) Into the Doldrums is used on Rallypoint Delta and Gilded Coast.
 * 8) The Raindrop that Fell to the Sky is used on Siren's Call and Bulwark's Ambry.
 * 9) The Rain Previously Known as Purple is used on Sky Meadow.
 * 10) Petrichor V is used on A Moment, Fractured and A Moment, Whole.

Boss Tracks

 * 1) Thermodynamic Equilibrium is used on Titanic Plains, Distant Roost and Abandoned Aqueduct.
 * 2) Hydrophobia is used on Rallypoint Delta and Abyssal Depths.
 * 3) Köppen As Fuck is used on Wetland Aspect, Scorched Acres and Siren's Call.
 * 4) Antarctic Oscillation is used on Sky Meadow.

Others

 * 1) Risk of Rain 2 is used in the main menu and is the main theme of the game.
 * 2) The Dehydration of Risk of Rain 2's Main Theme by the Composer Chris Christodoulou is a variation of the main theme used in the Logbook.
 * 3) Monsoon 2.0 (Consoles Trailer) is featured in the official cinematic trailer released in August 2019 and available on the Nintendo, Playstation and Xbox official Youtube channels.

Trivia

 * Köppen As Fuck was added with the Scorched Acres update.
 * The Raindrop that Fell to the Sky was added with the Skills 2.0 update.
 * A Glacier Eventually Farts (And Don't You Listen to the Song of Life) was added with the Hidden Realms update. The voice featured on the track (but not present in-game) is the one of Werner Herzog from the "making-of" documentary film Burden of Dreams (1982). The name of the track is a quote from Werner Herzog's Minnesota Declaration.
 * Antarctic Oscillation and The Rain Previously Known as Purple were added with the Artifacts update.
 * Antarctic Oscillation is the only Boss track that doesn’t end after completing the Teleporter Event.