The soundtrack | Static Hollow

Since 1.55.0 none of Minecraft's own music plays in Static Hollow. Wherever and whenever the game would have played one of its pieces, one of the mod's plays instead: in the overworld, in Creative, under water, in the Nether, in the End, during the dragon's fight and over the credits. And it follows the story.

The soundtrack's own track list has 63 pieces, about 2 hours 20 minutes of music, as of 1.59.0. Chapter Eight added more after that: see Chapter Eight's music.

The Static Hollow soundtrack cover — The soundtrack's cover.

How it plays

Minecraft's settings still count. Its Music volume and Music Frequency decide how loud and how often, as they always did.
Now Playing. Minecraft's "Now Playing" corner names each piece: "Static Hollow - The Deep", or on the title screen "Static Hollow - Lullaby".
The place or the chapter. Each time a new piece is due it's either the lullaby of the place you're in or one of the story chapter's own pieces. The further the story has got, the more often it's the chapter's (see the table below).
Nothing over the scores. While one of the mod's own scores is playing, a boss fight's, a place's (Rosemont's) or a cutscene's, the background music stops and nothing new starts over it until it's done.
Under the Dead Water each water has its own piece, and that comes first whenever you're under.

The story's music, chapter by chapter

The world keeps track of how far its story has got, and tells everyone in it (multiplayer too). "How often" is the chance that a new piece is one of the chapter's rather than the place's lullaby.

Where the story is	From	Its pieces	How often
Before the altar	A new world	Lullaby	15%
The Hollow	The Forsaken Altar is awake	Forsaken, Lullaby	40%
Act Two	The Breach Altar is awake	The Treeline, Forsaken	45%
The Bloom	The Gardener is dead	Pollen, The Approach	45%
The Flesh	The Flesh is awake	The Flesh Wakes, Rosemont, The Laboratory Below, Shelter Dark, The Approach	55%
The Static	The Bloom is dead	Dead Air, The Last Light, The Soul Remains	50%
Signed off	The Null Static Zone has signed off	Dead Air, Signing Off (the record), The Last Light	50%
The Deep	The Chorus has run, and isn't dead	The Deep, Dead Air	55%
After	The Chorus, whole, is dead	Quiet Now, The Last Light, Signing Off (the record), Lullaby	40%
The Door	The End's seal is broken	The Door, Quiet Now, The Last Light	50%
The Vault	The seam in the screen is open	The Vault, The Door, Dead Air	50%
The Other Side	His first reel has been run	The Vault, Dead Air, The Door	55%
The Show Goes On	The last show	The Show Goes On, Quiet Now, The Last Light, Lullaby	50%
The First Signal	After the Hub, once you've come down from it	The First Signal, The Door, Dead Air	55%
The Dead Water	Through his portal, onto the rig	Dead Water, The First Signal, Low Tide	60%

Pieces in bold were written for that stage of the story. "Signing Off (the record)" is the music disc's longer version, not the short piece that plays as the Zone signs off.

The places' lullabies

Twelve pieces in the title screen's way, a broken music box over a cold drone, soft and far apart, the way Minecraft's own music comes. One for each kind of place:

Piece	Where
Hollow Fields	Plains and meadows, and the Hollow Moor. Anywhere that isn't one of the others.
Under the Boughs	The woods, and cherry groves
Pine Needles	Taiga and groves
First Frost	Snow
High Places	The mountains and hills
Dry Bones	Desert, badlands and savanna, and the Signal Flats
Still Water	Swamps, and the Weeping Fen
Green Hush	The jungle
Low Tide	The sea, rivers and beaches, and anywhere under water
Hollows	Caves, and anywhere down in the dark under the ground
Embers	The Nether
Far Out	The End

The Hollow Moor, the Signal Flats and the Weeping Fen are three of the Hollow's own country.

The soundtrack, all 63 pieces

As the soundtrack's own track list has them: the story's pieces in the order you meet them, then the music that plays in place of Minecraft's, then chapters six and seven.

The story's music

#	Title	Length	When it plays
1	Lullaby	1:39	The title screen
2	The Flesh Wakes	1:07	When the Flesh wakes
3	Rosemont	2:33	In the streets of Rosemont
4	The Flesh's Mini-Boss	3:02	The Congregation, Specimen Zero, the Warden of Shelter No. 4, the Broodmother, the Amalgam
5	The Laboratory Below	3:23	Under the Laboratory
6	Shelter Dark	3:43	Down in Shelter No. 4
7	The Approach	2:33	Walking up to the Bloom
8	The Gardener, Reborn	3:22	The Gardener, Reborn's fight
9	The Choir	3:22	The Gardener, Reborn's fight, when the Bloom opens its mouth
10	The Last Walk	2:23	Carrying the Device to the Bloom
11	The Soul Remains	2:03	After the blast
12	The Ending	0:41	The ending cutscene
13	The Ending (Late)	0:22	The ending cutscene, in a world whose Bloom had already burnt
14	The Last Light	1:20	After the ending
15	The Omni Ray	1:17	The Omni Orbital Railgun's cutscene
16	The Carrier	2:38	The Carrier's fight
17	Signing Off	0:40	The Null Static Zone signing off
18	Signing Off (Record)	2:33	The music disc
19	The Late Show	0:38	Arriving at the drive-in
20	The Chorus	3:00	The Chorus's fight in its pit
21	It Speaks	0:42	The cutscene where the hive speaks
22	The Mind	0:34	The cutscene where the Chorus rises
23	It Runs	0:32	The cutscene where the Chorus goes down
24	It Comes Up	2:02	The Reach's siege
25	The Deep	2:33	In the Deep
26	Stand Still	2:33	The Deaf King's fight
27	All of Them	3:03	The last fight: the Chorus, whole

The music in place of Minecraft's (1.55.0)

#	Title	Length	When it plays
28	Hollow Fields	2:33	Plains and meadows
29	Under the Boughs	2:36	The woods
30	Pine Needles	3:03	Taiga and groves
31	First Frost	2:31	The snow
32	High Places	2:53	The mountains
33	Dry Bones	2:40	Desert, badlands and savanna
34	Still Water	2:37	Swamps
35	Green Hush	2:54	The jungle
36	Low Tide	2:45	The sea, rivers and beaches, and under water
37	Hollows	2:56	Caves, and down in the dark under the ground
38	Embers	2:31	The Nether
39	Far Out	2:23	The End
40	Forsaken	2:20	The story's music once the Forsaken Altar is awake
41	The Treeline	2:44	The story's music in Act Two
42	Pollen	2:13	The story's music once the Gardener is dead
43	Dead Air	3:03	The story's music once the Bloom is dead
44	Quiet Now	2:47	The story's music after the Chorus, whole, is dead

Chapter six: the Door at the End of the World (1.56.0 - 1.58.0)

#	Title	Length	When it plays
45	The Door	2:30	The story's music once the End's seal is broken
46	The Stalls	2:33	In the Stalls
47	Standing Ovation	3:02	The Crowd's fight
48	Front Row	0:44	The Watcher in the front row
49	Behind the Picture	2:34	In the Watcher's Vault
50	The Watch	0:43	The Watcher at his wall of sets
51	The Projectionist	2:52	The Projectionist's fight
52	The First Reel	0:41	His first reel
53	The Vault	3:23	The story's music once the seam in the screen is open
54	Curtain Up	0:45	The first time through the black door
55	The Other Side	2:35	On the other side
56	What He Kept Out	3:02	The Viewer's fight
57	The Last Show	1:13	The last show, and the credits
58	Thank You for Watching	2:33	The record
59	The Show Goes On	2:43	The story's music after the last show

Chapter seven: the First Signal (1.59.0)

#	Title	Length	When it plays
60	The Hub	2:35	In the Hub - the realm he made
61	Enough	2:05	His speech in the Hub - and what comes through
62	It's Awake	0:52	Coming down from the Hub
63	The First Signal	3:21	The story's music in Chapter Seven

Chapter Eight's music

The Dead Water (1.62.0 and 1.63.0) came after the track list, so these aren't on it yet:

The Rig: the cutscene as you come down onto the rig.
Dead Water: the story's own piece for Chapter Eight (with The First Signal and Low Tide).
One piece for each of the Dead Water's waters, played while you're under: the Grey Shelf, the Haemal Reach, the Wireweed, the Lantern Fields, the Ossuary Flats, the Brine Sink, the Molar Reef, the Drowned Mycelia, the Rime Shelf, the Ember Vents and the Carrier Wave. In the twelfth, the Black Below, there's no music: only the sound of the ocean.

See the Dead Water for the waters themselves.

Records

Two of the pieces are music discs you can keep and play in a jukebox. Each shows as "Music Disc" with its title underneath.

Disc	Length	Comparator	Where it comes from
Static Hollow - Signing Off	2:33	6	One of the Carrier's drops, when the Null Static Zone signs off.
Static Hollow - Thank You for Watching	2:33	15	You're sent home with it after the last show, at the end of chapter six.