Thanks for taking the time to listen and for your inputs!
The Shostakovich comparison is definitly boosting my ego ahah, i need to check Arnolds and Goldenthals work out. I don't have a score for it as i'm a bit slow in the theorical side of things. But it would be really interesting to do someday... and probably do-able adding notations for synths, unusual instruments, phrases and such...You point out something really interesting, i think good horror/sinister music often comes from a lack of harmony or theme and is often achieved thanks to extensive use of minor keys,
dissonances, unusual techniques and ambient/cinematic sounds rather than thematical ideas although a simple creepy leitmotiv can do wonders (halloween, jaws,the exorcist...). I'm happy that it feels connected, i think the use of the Harp/vibraphone combination(in a Bernard Hermann style) and sound fx transitions helped in that matter!
Those percussions are called jungle percussions on the plugin i'm using so...not sure ^^ anyway thanks for your feedback and i'll make sure i post future pieces here!