Sword Art Online: Extra Edition - Underwater Quest BGM (synthesia)
My arrangement of one the songs from the sword art online extra edition. It is also in Season 2 Episode 2.
I have a bad habit of recording the video before choosing an official name for the midi.
When I heard this music while watching the sword art extra edition yesterday, I just had to jump on the opportunity to arrange it for piano. It, more specifically, starts playing at 1:25:30 right before they go under water.
It has no name that I know of, so I will call it "Underwater Quest BGM". I assume it's a new song; I like to think I'm familiar with the series' music
EDIT: 2/1/16
This song has a name now. It is a shortened version of "Moon and Shadow" from the Sword Art Online Music Collection.
EDIT: 5/10/15
midi download(v2: I fixed the sustain while I made the sheets)
http://www.mediafire.com/download/8rcy0yrm8km48mg/SAO+EE+Underwater+BGM.mid
sheet music(v2) download (made by request; sorry to that one guy who asked that i didn't see)
http://www.mediafire.com/view/91xnr7ewwa73cq8/SAO_EE_Underwater_BGM.pdf
software: synthfont, synthesia, musescore2