Crashing and sharp whooshing hit followed by electronic repeating tension sequence
A very low long string note full of tension and suspense in C.
Droning ring, hums and errie, unsettling strings
Progressive pulsing drones with tense glassy strings, chittering bats or rats and water drips
Short, fast bowed strings with low, ominous piano chords
Ominous musical ambience with big reverbed kick drum hits
Tense building rising multi-tonal layered drones