Review your cast. Where is the imperfection? If everything matches perfectly, delete the most beautiful element. Replace it with something that is 15% wrong. That 15% is the source of memorability.
Most listeners don't notice minor pitch mistakes, but they do notice when the "edifice" of the mood is destroyed.
"And... Cut. Synthesis terminating."
The door slammed shut. Elias jumped. Thud. Thud. Thud. Footsteps hammered against the stone floor outside. The golden light flickered and died. Shadows stabbed at the walls. He scrambled backward, his heart drumming a frantic rhythm against his ribs. The air turned acrid, stinging his eyes. Run. The thought was a jagged edge in his mind.