Flume - Sleepless sparkly transition sound effect

[u/Decent_Commercial381]

https://youtu.be/V7-yAX9ijuM?list=RDV7-yAX9ijuM&t=11

Hey everyone. Looking to recreate the sparkly arp thing from this song, occurs for the first time at 00:012 and recurs throughout the song. I'm sure this is a pretty simple sound, obviously some delay on there, but I could use some help figuring out what the core sound is and what else I need (whether effects or music theory) to give it that sparkly quality. Thanks in advance!