Undertale OST by Length

0:06 - Dogbass
0:07 - Last Episode!
0:12 - Ghouliday
0:12 - CORE Approach
0:14 - Ooo
0:14 - Oh My...
0:14 - Small Shock
0:17 - Unnecessary Tension
0:17 - Live Report
0:18 - Danger Mystery
0:18 - She's Playing Piano
0:18 - Final Power
0:20 - Long Elevator
0:21 - Bergentrückung
0:21 - Burn in Despair!
0:22 - Anticipation
0:23 - Your Best Friend
0:23 - Spooktune
0:25 - Bird That Carries You Over A Disproportionately Large Gap
0:25 - Spookwave
0:26 - Dating Tense!
0:26 - Run!
0:30 - Uwa!! So Holiday♫
0:30 - Power of "NEO"
0:31 - Barrier
0:31 - Good Night
0:32 - Start Menu
0:32 - Nyeh Heh Heh!
0:32 - Quiet Water
0:32 - Oh! Dungeon
0:32 - Menu (Full)
0:34 - Uwa!! So HEATS♫
0:34 - You Idiot
0:34 - But the Earth Refused to Die
0:35 - Dating Fight!
0:37 - Dogsong
0:38 - Pathetic House
0:42 - Thundersnail
0:42 - Confession
0:44 - Mysterious Place
0:45 - Undyne
0:45 - Tem Shop
0:46 - It's Showtime!
0:47 - Death Report
0:50 - Determination
0:50 - sans.
0:50 - Shop
0:56 - Uwa!! So Temperate♫
0:56 - Enemy Approaching
0:56 - Ghost Fight
0:56 - Chill
0:57 - Fallen Down
0:57 - Bonetrousle
0:57 - Temmie Village
0:58 - Wrong Enemy!?
1:01 - Premonition
1:01 - Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything
1:02 - Song That Might Play When You Fight Sans
1:03 - Metal Crusher
1:03 - Stronger Monsters
1:15 - Memory
1:16 - Snowdin Town
1:20 - Amalgam
1:22 - NGAHHH!!
1:24 - Oh! One True Love
1:25 - Alphys
1:27 - Hotel
1:29 - Once Upon a Time
1:32 - Ruins
1:44 - Snowy
1:46 - Spider Dance
1:47 - For The Fans
1:48 - Heartache
1:52 - Finale
1:53 - SAVE the World
1:54 - Respite
1:55 - Spear of Justice
1:56 - Dating Start!
2:02 - Home (Music Box)
2:02 - Don't Give Up
2:03 - Home
2:05 - His Theme
2:06 - Waterfall
2:06 - Here We Are
2:12 - The Choice
2:14 - Death by Glamour
2:15 - Last Goodbye
2:22 - Another Medium
2:25 - Dummy!
2:30 - Fallen Down (Reprise)
2:36 - ASGORE
2:36 - Battle Against a True Hero
2:36 - MEGALOVANIA
2:46 - CORE
2:50 - It's Raining Somewhere Else
3:01 - Hopes and Dreams
3:28 - An Ending
4:00 - Your Best Nightmare
4:12 - Bring It In, Guys!
4:44 - Reunited
6:21 - Undertale