The membranophones have a dark and foreboding character which is influenced by low register. 

There are also use of idiophone instruments which has a contrasting tone colour to the membranophones. 

They create a agitated and mysterious character which is influenced by the use of slides in the low and in contrast, the high register. 

The idiophones create a sandy and piercing tone colour. There is also the use of aerophones which is ringing and clear, this creates a

lots and lots of percussion
the louder deeper percussion is very menacing and angry
while the lighter shakers and light snare playing makes you feel safer? - in the sense that its funky and makes you less on edge.

The nasal, whiny siren sounds give a very ominous character.
The character changes from loud, menacing and scary (which is due to the deep rumbling bass drums, sharp, cracking snare hits and sudden, out-bursting, quickly muted cymbal crashes) to a more funky light

The mallets used on the bongos give a faint, kind of popping sound quality.

 This may have been created through using softer mallets. The overall tone colour changes throughout the piece, it begins contrasting between the low, resonant drum and metallic, sparkling triangle, becomes more complimenting when the sandy, dry snare drum blends with the woody, clear idiophone to create a unified overall tone colour and a relaxed, playful, character.
Link to character not the clearest. Maybe needs some more here but strong links, descriptions and use of TC words. 

By the woody idiophones coming in at "random" times it gives an element of surprise and adrenalin to the character of the music. Each percussive element from the cymbals to the mambranophones (snare drums) create contrasting tone colours to emphasise the chaotic and eerie mood and potentially create a sense of tempestuous aggression. 

The contrast between the high sounding idiophones (piercing and clear bells) and the lower sounding idiophones and membranophones (Resonant and rich drums) essentially juxtapose each other and stand out to highlight the uncomfortable mood of this piece. The overall tone colour does not seem to change

 but instead more instruments are added throughout the piece that in turn accents the aggressive nature of this piece. Some expressive elements are used to intensify the tone colours of each instrument like dynamics, staccato and articulations. 

The more resonant tone colours blend homogeneously and allow the more shrill and piercing tone colours to stand out.

That urgent feeling continues with the fast, short and sharp snare hits that we here throughout the piece, making us imagine a war scene and the long bass drum rolls adding to all this. 

It goes from feeling ominous to instantly feeling a fair bit lighter and calm whilst still keeping the feeling of suspense.

The shaker and brushes that come after immediately change the feel, becoming duller and sandier, before the opening instruments come in again with their specific tone colours.

The opening siren, though not an aerophone, was overly nasal, as though it were imitating a cow.

The overall tone colour changes frequently, often between a low, rumbling timbre and a high, dull, sandy timbre. 

There are few instances where a resonant low timbre is juxtaposed with a high, metallic instrument eg. the bass drum and the chimes/hand cymbals.
The bongos, which are usually quite resonant, are played with hard mallets wrapped in felt, creating a short, dull, almost 'covered' timbre. 

The turned off snare

 also adds to the dull tone colour. Going back to the snare, shaker and bongo creates a playful, frantic feeling, mostly due to the odd tone colours.

The performers will outline this then change suddenly to much more metallic and aggressive sounds, 

to an aerophone that holds a buzzing pitch.

Towards the start of the piece a drum with a chiming, metal object on top. Each hit gives us two distinct but complementary tones: a rounded, tight drum and a jangly, dry bell sound.

There is a sense of omnisity(?) 

created by the rumbling and deep bass drums. They are accompanied by bright and striking percussion which is chaotic and disorientating. 

More parts are added and drop out continuously, changing texture frequently from stressful and busy to sparser and more foreboding. 

The busy and intense tones are created with tones that are created on instruments with more aggressive techniques, such as the snare and percussion being hit harder and faster, giving
Is busy a TC word??

There is a sandy dull woody tone colour in percussion . With a ringing metalic triangle . Dull drums to start with . Nasel sounding sliding siren melody . 

It changes from each section from a wisshy washy ness

 to sparse harshness and then back to the original wash and mess of them combined . A harsher louder sound on the snare is influenced by striking it harder creating a more piercing crashing sound . 

Instruments used are mostly membranophones such as the snair the booming bass drum and wood block . The toms have a very muted damp sound and are being struck very softly with felted mallets . 

 the sirens add to this sense of a war zone, giving the piece a harsh TC. 

the cymbal creates a washy, sandy sound, building up to a big clash. 

there is stark contrast between the clear, nasal sound of the siren and the cashier sounds of the percussion.

Triangle  -  metallic, sharp
the siren creates the tension, suspense.

The bass drum creates a resonant and rumbling sound.
towards the end, mambranophones create the ominous mood of the piece.`

The hard sticks on the high-tension membramaphone help create a light color

The primary tone colour seems to alternate between a deep, dark tone and a bright sharp one.
Link these to specific instruments, link to character and give more than one tone colour word per instrument. 

The deep mellow bass drum in the more sparse area's create a sense of brewing.

The woody percussion instrument adds to this intensity due to it's sparsity. 

The lower pitched drums create an ominous and dark character through sustained soft stick strikes.

Also, the Castanets through short, high pitched clicks create an almost comic character.

There’s large range of percussion instruments. Triangle creates sharp sound. A snare drums make a sandy tone. 

Lower pitched drums make darker sound. Generally whole piece is in  loud tone 

the triangle has a metallic and sharp character 

by the strong dynamics and the rapid movement. 

 the bass drum has a resonant and rich sound carried by the crescendo to an aggressive character.