Credits:

Dark Ambient Music (Death And Forever) by TheBoseDeity
is licensed under the Attribution NonCommercial 3.0 License.
https://freesound.org/people/TheBoseDeity/sounds/395691/

DC Metro - Interior 1 by crashoveride6 is license under CC0
https://freesound.org/people/crashoverride6/sounds/219233/

Washington, DC by The Nighttime Adventure Society is licensed under a Attribution-NonCommercial-ShareAlike 3.0 International License.
https://freemusicarchive.org/music/The_Nighttime_Adventure_Society/Chapter_One_The_First_Chapter/The_Nighttime_Adventure_Society_-_Chapter_One-_The_First_Chapter_-_01_Washington_DC/

Java Pop by Spires That in the Sunset Rise is licensed under a Attribution-Noncommercial-Share Alike 3.0 United States License.

Parallel by Beat Mekanik is licensed under a Attribution 4.0 International License.

relaxation music #54.mp3 by ZHR0 is licensed under a Attribution 4.0 International License.
https://freesound.org/people/ZHR%C3%98/sounds/572358/

Amicus Meus by Anonymous Choir is licensed under a Public Domain License.

apex chappelle by Uncle Milk is licensed under a CC0 1.0 Universal License.

Camille Saint Saens - Carnaval des animaux - I La Marche Royale du Lion by Aitua is licensed under a Attribution-ShareAlike License.

BWV 769a: Canonic Variations - 2. Canone alla quinta by James Kibbie is licensed under a Attribution-NonCommercial-NoDerivatives (aka Music Sharing) 3.0 International License. Song is untouched in full play.

Mushrooms by HoliznaCC0 is licensed under a CC0 1.0 Universal License.