Music by Kevin MacLeod. Available under the Creative Commons Attribution 3.0 Unported license. Download link: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100321

MacLeod's description:

Genre: Soundtrack
Length: 0:40
Instruments: Orchestral featuring French horns, chimes, and tremolo strings
Tempo: 112

Written as an introduction to a play, this has the feel of a 1950's monster movie. 042
ISRC: US-UAN-11-00321
Dark, Suspenseful, Epic 2006