This song is played during the Flumpty Night in One Night at Flumpty's 3.

It's Flumpty Bumpty! - Jonochrome (One Night at Flumpty's 3)

Welcome To Team Fortress

Refugee

Megalovania Original

Game Theory Theme (AKA)Science Blaster Cover

We are number one but its a Waluigi Parody, Check out the music video for it!

https://www.youtube.com/watch?v=W3mWZxCmEzk&feature=youtu.be

We Are Number One - Waluigi Parody

The parody made by SMG4 on his channel.
The original video is here https://youtu.be/fcYohrfsJJ8

♫ The Ultimate Smash Bros ♫ by SMG4

All of this was not edited, and all of this has the intention of bring the song earlier!

ALL credit goes to The Living Tombstone:
https://www.youtube.com/user/TheLivingTombstone
https://twitter.com/LivingTombstone
https://www.facebook.com/TheLivingTombstoneOfficial
https://soundcloud.com/tltombstone/

Original Video:
https://www.youtube.com/watch?v=b-Npx69OOp8

Megalovania Original

A Hat