OST

Five Nights at The Reject Club
https://www.youtube.com/watch?v=BPAasdYUWEo - Title Screen

https://www.youtube.com/watch?v=mq0zrr1600M - Music that randomly plays in Background during gameplay or when Tobias is at your right door on Nights 4-8

https://www.youtube.com/watch?v=LhKlCp5Sh9I - When you beat Nights 5-7 or when Colin Appears during the blackout from Nights 1-3

Five Nights with The Good Neighbors
https://www.youtube.com/watch?v=bJZ_0jRapvU - Title Screen

https://www.youtube.com/watch?v=QtOMB7ixhVM - When Patrick is in The Prize Corner

https://www.youtube.com/watch?v=566OSZgLTjU - When Patrick leaves The Prize Corner

https://www.youtube.com/watch?v=RaTt_VT7UPs - 6:00 AM Theme

https://www.youtube.com/watch?v=qkDcMIKqb4U - Night 5-7 Endings

https://www.youtube.com/watch?v=DOcM5degIRw - Night 8 Ending

Five Nights in Detention
https://www.youtube.com/watch?v=1Xi7pZ5xKew - Title Screen

https://www.youtube.com/watch?v=fe33G8DdRyc - When Nothing is Happening

https://www.youtube.com/watch?v=jC_bEuqPjWo - When someone is Active

https://www.youtube.com/watch?v=xnCcy_boDU0 - When someone is Close to you

https://www.youtube.com/watch?v=PTi-d-7FC-k - When it is 6:00 AM

https://www.youtube.com/watch?v=4U7_Sfqwdl8 - Tobias Minigame Static

https://www.youtube.com/watch?v=Nq1vSA0xe6M - Bad Ending Theme

https://www.youtube.com/watch?v=DOcM5degIRw - Good Ending Theme

https://www.youtube.com/watch?v=fe33G8DdRyc - Extras Menu

https://www.youtube.com/watch?=lAap32inJUE&v=sUqKUhS_FP8 - 100% Completion Song

Trivia

 * Five Nights at The Reject Club has the least amount of Music in the OST there only being 3
 * Life Ain't Perfect is the only song in the Series to play in more than one Game
 * The 100% Completion Song is the Only song in the Series that is not English