What is the name of this piano piece? Help!

[not_a_pianist]

Hello can someone please tell me whats the name of this piano piece

It starts at 00:48; I heard it the first time at a show in the theater, and I have been enthralled by it ever since. 

Thank you.

[pianowolfi]

I am sure it's a piece by Satie but I don't know which one.

[richard black]

Satie, Gnossienes, No. 3

https://imslp.org/wiki/Gnossiennes_(Satie,_Erik)

[lontano]

Hello can someone please tell me whats the name of this piano piece

It starts at 00:48; I heard it the first time at a show in the theater, and I have been enthralled by it ever since. 

Thank you.

As Richard replied it is Erik Satie's Gnossienne #3. If you like this piece you may very well enjoy other works by Satie. He wrote quite a bit of piano music, much of it rather dreamy, quirky, and fairly well unique in style from others in 1890's Paris.