Sources

Team Fortress 2: Be With Robots 2 [T. #1] (Extended)

Music: Once It Starts by supergarage

Team Fortress 2: Be with Robots 2 [T. #2]

Music: Echo Instrumental (Mastered) by Crusher-P

Original: 【VOCALOID Original】ECHO【Gumi English】

Team Fortress 2: Be with Robots 2 [T. #3]

Music: AGAIN - INSTRUMENTAL by Crusher-P

Original: 【VOCALOID Original】Again【Gumi English】

Performance Boost

Music: Conscience Killer by Black Rebel Motorcycle Club