Songs:

Enemy Approaching Remix 
by Caio2860
Video:
https://www.youtube.com/watch?v=VoErlSmPRCM
Channel:
https://www.youtube.com/channel/UCssDw-AqK4_Cds8Fse2Hx2A

Enemy Approaching Remix
by SK_Jynx
Video:
https://www.youtube.com/watch?v=BxMwKqcdYIA
Channel:
https://www.youtube.com/channel/UCxSwEJU1FJet4vLtn9-V1Gw