What is this sound? :O

[thisiscriz]

I'm in love, maybe something similar in omni sphere? Would love to know what this is called if it has a name! Right at the beginning.

The Host Soundtrack Antonio Pinto- I'm Alive. - YouTube

 

[RTMN]

I think it's just a synth marimba with lots of reverb

 

[steffeeh]

Sounds like a smooth organ (play with multiple sine-oscillators), with a light unison or chorus, with quick notes, and a lot of reverb with an autopan, and then there's a delay that fades in.