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Megalovania beginning piano

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Megalovania beginning piano is the iconic opening riff from Undertale's Sans boss fight theme, used for dramatic reveals and meme build ups online.

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About this sound

Megalovania beginning piano is the iconic opening riff from Undertale's Sans boss fight theme, used for dramatic reveals and meme build ups online.

This clip isolates the very start of Megalovania, just the solo piano playing the iconic opening notes before the drums and synths crash in. The notes are slow, sparse and slightly haunting, each one hanging in the air with a sense of warning. Because listeners instantly recognise the melody from the Sans fight, those first seconds carry all the tension of the full track in miniature. It feels like a calm moment right before something serious happens, which is why the quiet piano hits harder than a louder cue and immediately puts the viewer on edge.

Pro tip

Place the piano at the exact moment a character realises they are in trouble, then let it play in full silence for two beats before cutting to the action. Do not loop it or talk over the first notes, the recognition needs that pause.

How people use it

Drop it before a boss fight parody reveal.
Use it when someone makes a serious mistake.
Add it to a calm scene turning suddenly threatening.
Play it under a stare down between two characters.

More information

Megalovania was composed by Toby Fox and became most famous as the boss theme for Sans in Undertale, released in 2015, though earlier versions appeared in Homestuck and a Halloween Hack. The track spread far beyond the game through remixes, covers and memes, with its opening melody becoming instantly recognisable even to people who never played Undertale. The piano-only beginning is often separated from the intense full arrangement, letting creators borrow the reputation and dread of the Sans fight without using the whole song, which keeps the reference clear and reusable.

FAQ

What is the Megalovania beginning piano sound?

It is the solo piano opening of Megalovania, the track best known as Sans's boss theme in Undertale. The clip lasts only a few seconds and stops before the full drums, bass and synths of the main arrangement begin.

Where does Megalovania come from?

Megalovania was written by Toby Fox. An early version was used in his 2009 Halloween Hack and in Homestuck, but it became widely known after Undertale was released in 2015, where it plays during the fight against Sans.

Why do people use just the piano beginning?

Creators use the quiet piano intro because viewers recognise the melody instantly, so it signals danger or a serious turn without needing the whole song. It works as a short build up before a joke, reveal or confrontation lands.