available for musical works

access denied

accident

alarm

alarming

alert

anxiety

attention

bank

beeping

break

buzzing

caution

checkpoint

cosmic

danger

dangerous

device

digital

emergency

escape

evacuation

futuristic

game

hi-tech

hud

intruder

invaders

invasion

loop

military

noise

noisy

police

repeat

restricted area

robbery

scifi

seamless looping

security

signal

sos

space

spaceship

system

tension

urgency

violator

war

warfare