The gap of time and space to parallel worlds[Azure Sheep extended OST]

Flammable [Black Mesa: Blue Shift OST]

Collided [Black Mesa: Blue Shift OST]

The Dark World [Black Mesa: Blue Shift Main Menu Theme]

Revival [Black Mesa: Blue Shift OST]

HECU: Initial Two [Black Mesa: Blue Shift OST]

H.E.C.U [Black Mesa: Blue Shift OST]

Legacy Part 2

The Keeper [Black Mesa: Blue Shift OST]

Joel Nielsen - BMS - Forget About Freeman

Duty Calls: Aftermath [Black Mesa: Blue Shift OST]