- For the area with the same name, see Barrier.
"Barrier" is the 75th track in the Undertale Soundtrack. It is played before the fight against Asgore.
- This track is composed entirely of ambient wind sounds, similar to CORE Approach. Its sound seems to be in rhythm with the pulses of light the barrier makes during the encounter.
- The samples used in this track are also used in Amalgam, but slowed down.
- This track is very similar to "Giygas Lair" from Earthbound.