CORE Approach

"CORE Approach" ("KERN-Annäherung") ist das 64. Lied im Undertale-Soundtrack. Dieses kurze Stück wird in dem kleinen Raum, der das MTT-Resort von dem KERN trennt, gespielt. Es besteht aus nichts anderem als leisen Gitarrensounds mit zugefügten Halleffekten von "Hotel" und atmosphärischen Geräuschen.

Undertale-Soundtrack
1 - 10	Once Upon a Time ● Start Menu ● Your Best Friend ● Fallen Down ● Ruins Uwa!! So Temperate♫ ● Anticipation ● Unnecessary Tension ● Enemy Approaching ● Ghost Fight
11 - 20	Determination ● Home ● Home (Music Box) ● Heartache ● sans. Nyeh Heh Heh! ● Snowy ● Uwa!! So Holiday♫ ● Dogbass ● Mysterious Place
21 - 30	Dogsong ● Snowdin Town ● Shop ● Bonetrousle ● Dating Start! Dating Tense! ● Dating Fight! ● Premonition ● Danger Mystery ● Undyne
31 - 40	Waterfall ● Run! ● Quiet Water ● Memory Bird That Carries You Over A Disproportionately Small Gap ● Dummy! Pathetic House ● Spooktune ● Spookwave ● Ghouliday
41 - 50	Chill ● Thundersnail ● Temmie Village ● Tem Shop ● NGAHHH!! Spear of Justice ● Ooo ● Alphys ● It's Showtime! ● Metal Crusher
51 - 60	Another Medium ● Uwa!! So HEATS!!♫ ● Stronger Monsters ● Hotel Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything Confession ● Live Report ● Death Report ● Spider Dance ● Wrong Enemy !?
61 - 70	Oh! One True Love ● Oh! Dungeon ● It's Raining Somewhere Else ● CORE Approach ● CORE Last Episode! ● Oh My... ● Death by Glamour ● For The Fans ● Long Elevator
71 - 80	Undertale ● Song That Might Play When You Fight Sans ● The Choice ● Small Shock ● Barrier Bergentrückung ● ASGORE ● You Idiot ● Your Best Nightmare ● Finale
81 - 90	An Ending ● She's Playing Piano ● Here We Are ● Amalgam ● Fallen Down (Reprise) Don't Give Up ● Hopes and Dreams ● Burn in Despair! ● SAVE the World ● His Theme
91 - 100	Final Power ● Reunited ● Menu (Full) ● Respite ● Bring It In, Guys! ● Last Goodbye But the Earth Refused to Die ● Battle Against a True Hero ● Power of "NEO" ● MEGALOVANIA
101	Good Night