Music used in this trailer of Letter of Introduction (formerly the Rack Railway) is: Cumbria No Frills Faster by Kevin MacLeod and is licensed under a Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/)
Source: https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100275
Artist: https://incompetech.com/
This piece has been modified for use in this trailer.