Soundtrack

The soundtrack for Risk of Rain 2 was composed by Chris Christodoulou. It was first released as an Early Access OST before being fully released along the 1.0 update of the game on August 11th, 2020.

Availability
The official OST is currently available for purchase on Bandcamp. Early versions of the tracks were released during development in the Early Access OST, which is not available for purchase anymore (original Bandcamp link).

Track list
The album contains 20 official tracks:
 * 1) Through a Cloud, Darkly (01:59)
 * 2) Risk of Rain 2 (05:22)
 * 3) Evapotranspiration (05:01)
 * 4) Thermodynamic Equilibrium (05:18)
 * 5) Terra Pluviam (07:41)
 * 6) Köppen As Fuck (05:48)
 * 7) Disdrometer (06:51)
 * 8) Into the Doldrums (05:11)
 * 9) A Glacier Eventually Farts (And Don't You Listen to the Song of Life) (05:11)
 * 10) Nocturnal Emission (04:52)
 * 11) The Dehydration of Risk of Rain 2 (04:58)
 * 12) Parjanya (02:54)
 * 13) Hydrophobia (02:47)
 * 14) Antarctic Oscillation (06:27)
 * 15) The Rain Formerly Known as Purple (07:55)
 * 16) The Raindrop that Fell to the Sky (11:38)
 * 17) You're Gonna Need a Bigger Ukulele (04:58)
 * 18) ...con lentitud poderosa (04:50)
 * 19) Petrichor V (11:27)
 * 20) Lacrimosum (03:03)

The album also contains 4 bonus tracks:
 * 1) Monsoon 2.0 (01:33)
 * 2) Monsoon 2.0 (radio edit) (00:48)
 * 3) Monsoon 2.0 (alternate version) (01:33)
 * 4) A Glacier Eventually Farts [in-game version] (05:09)

Survivors of the Void track list
The Survivors of the Void soundtrack adds 9 new official tracks, and is also available for purchase on Bandcamp:
 * 1) Prelude in D flat major (02:16)
 * 2) A Placid Island of Ignorance (05:01)
 * 3) Having Fallen, It Was Blood (03:03)
 * 4) Out of Whose Womb Came the Ice? (03:47)
 * 5) Once in a Lullaby (06:03)
 * 6) A Boat Made from a Sheet of Newspaper (03:10)
 * 7) They Might As Well Be Dead (04:43)
 * 8) The Face of the Deep (05:21)
 * 9) Who Can Fathom the Soundless Depths? (05:57)

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) Terra Pluviam is used on Abandoned Aqueduct and Abyssal Depths.
 * 3) Disdrometer is used on Titanic Plains and Scorched Acres.
 * 4) Into the Doldrums is used on Rallypoint Delta and Gilded Coast.
 * 5) A Glacier Eventually Farts [in-game version] is used on Void Fields.
 * 6) Nocturnal Emission is used on Wetland Aspect.
 * 7) Parjanya is used on Bazaar Between Time.
 * 8) The Rain Formerly Known as Purple is used on Sky Meadow.
 * 9) The Raindrop that Fell to the Sky is used on Siren's Call and Bulwark's Ambry.
 * 10) ...con lentitud poderosa is used on Commencement.
 * 11) Petrichor V is used on A Moment, Fractured and A Moment, Whole.
 * 12) A Placid Island of Ignorance is used on Void Locus and The Planetarium.
 * 13) Out of Whose Womb Came the Ice? is used on Siphoned Forest.
 * 14) Once in a Lullaby is used on Aphelian Sanctuary.
 * 15) They Might As Well Be Dead is used on Sundered Grove.
 * 16) Who Can Fathom the Soundless Depths? is used on Sulfur Pools.
 * All replicated stages in the Simulacrum play their respective stage music with the exception of Abandoned Aqueduct, which plays Who Can Fathom the Soundless Depths? instead.

Boss Tracks

 * 1) Thermodynamic Equilibrium is used on Titanic Plains, Distant Roost and Abandoned Aqueduct.
 * 2) Köppen As Fuck is used on Wetland Aspect, Scorched Acres and Siren's Call.
 * 3) Hydrophobia is used on Rallypoint Delta, Abyssal Depths and Sundered Grove.
 * 4) Antarctic Oscillation is used on Sky Meadow.
 * 5) You're Gonna Need a Bigger Ukulele is used on Commencement.
 * 6) Having Fallen, It Was Blood is used on Siphoned Forest and Aphelian Sanctuary.
 * 7) A Boat Made from a Sheet of Newspaper is used on Sulfur Pools.
 * 8) The Face of the Deep is used on The Planetarium.

Others

 * 1) Through a Cloud, Darkly is used in the cinematic intro of the game.
 * 2) Risk of Rain 2 is used in the main menu and is the main theme of the game.
 * 3) The Dehydration of Risk of Rain 2 is a variation of the main theme used for the Logbook, character selection and the menus for Eclipse and Prismatic Trials.
 * 4) Lacrimosum is used in the outro cinematic and the end credits of the game.
 * 5) Monsoon 2.0 is featured in the official cinematic trailer released in August 2019 and available on the Nintendo, Playstation and Xbox official Youtube channels.
 * 6) Prelude in D flat major is used in the Simulacrum menu.

Motifs
Along with the basic Risk of Rain motif that is found throughout both soundtracks, a number of songs also borrow motifs from the first Risk of Rain soundtrack, or even other songs in and outside of Risk of Rain 2:



Trivia

 * Köppen As Fuck was added with the Scorched Acres update. The name of the song may be a reference to the "Tropical Rainforest Climate", which is designated as "Af" in the Köppen climate classification (Köppen Af).
 * 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 sampled dialogue is not featured in-game, and this instrumental version is a bonus track on the soundtrack. The name of the track is a quote from Werner Herzog's Minnesota Declaration.
 * The Dehydration of Risk of Rain 2 was originally titled The Dehydration of Risk of Rain 2's Main Theme by the Composer Chris Christodoulou up until the 1.0 update. Christodoulou explained that the song's title was shortened as some distribution platforms may return errors if a song title includes the artist's name in it.
 * Antarctic Oscillation and The Rain Formerly Known as Purple were added with the Artifacts update. The latter was initially called The Rain Previously Known as Purple.
 * The Rain Formerly Known as Purple features two motifs from Prince's Purple Rain, and features a similar outro.
 * Through a Cloud, Darkly, You're Gonna Need a Bigger Ukulele, ...con lentitud poderosa and Lacrimosum were added with the 1.0 update.
 * Nocturnal Emission was previously used on Sundered Grove before the release of Survivors of the Void.
 * In a first for the franchise, Prelude in D flat major and Who Can Fathom the Soundless Depths? are the first songs that are not composed by Christodoulou, but are rather his arrangements of Frédéric Chopin's Prelude Op. 28, No. 15 (appropriately named the "Raindrop" prelude).
 * The main melody of Risk of Rain 2 and The Dehydration of Risk of Rain 2 is adapted from the melody of "The Ghost Writer" from Alexandre Desplat's score for the film of the same name.
 * The ending of Terra Pluviam is an adaptation of the opening chords of "Mission to the Asteroid" from Michael Land's score 1995 game The Dig, made to fit the RoR2 sound pallette.
 * The Rain Formerly Known as Purple incorporates an arpeggiating piano motif and an ascending guitar motif from "Purple Rain", a song by the late artist Prince. The outro to both songs are also similar, including the use of piano and cymbals. The song also uses manipulated samples of the electric piano and clarinet from Chanson d'Automne from RoR.
 * A Glacier Eventually Farts samples the outro of Coalescence from RoR at around 2 minutes in.

Version History

 * Survivors of the Void
 * Major Content
 * Added New Track: Prelude in D flat major
 * Added New Track: A Placid Island of Ignorance
 * Added New Track: Having Fallen, It Was Blood
 * Added New Track: Out of Whose Womb Came the Ice?
 * Added New Track: Once in a Lullaby
 * Added New Track: A Boat Made from a Sheet of Newspaper
 * Added New Track: They Might As Well Be Dead
 * Added New Track: The Face of the Deep
 * Added New Track: Who Can Fathom the Soundless Depths?


 * PC Patch v1.0.2.0
 * Bug Fixes
 * Updated all music tracks to be more similar to the OST version


 * Early Access Content Update 5
 * Major Content
 * Added New Track: Through a Cloud, Darkly
 * Added New Track: ...con lentitud poderosa
 * Added New Track: You're Gonna Need a Bigger Ukulele
 * Added New Track: Lacrimosum


 * Early Access Artifacts Content Update
 * Major Content
 * Added New Stage Track: The Rain Previously Known as Purple
 * Added New Boss Track: Antarctic Oscillation


 * Early Access 'Skills 2.0' Content Update
 * Music & SFX
 * Add new stage track