WHAT MAKES AN UNDERWATER THEME

[spira.]

What, in your opinion, are some of the features that make a song just sound like an underwater theme?

[GamemakerX1]

Listen to this. Mabye this might give you some inspiration.

[Somewhat]

water

[Diabeto]

I like water

[Moonlight_]

Maybe, try using some blueish instruments, like the Strings or one of the Pianos? Maybe add some reverb to the piano, and equalize the strings a little? You could use any of the Electronic instruments, you could use a Vibraphone...or you could even use the Music Box.
Your possibilities for blue instruments are very limited, though. Maybe, you'll have to use some green instruments as well, like the Electric Guitar.

[Diabeto]

I HATE water

[Furryguyy27]

Maybe some vibraphone

[Diabeto]

Some xylophone with a bit of detune could sound like a rain I think

[jcfiggy]

What, in your opinion, are some of the features that make a song just sound like an underwater theme?

To me, a perfect underwater theme would be something with long spaces between notes, drenched in reverb, with maybe some deep picked bass, synth or organ with 7th chords or even extended chords, and possibly a high-pitched instrument every once in a while to add something bright. Or not.

[nat.io]

Here are two examples of what an "underwater" themed song should sound like. Use special reverbs such as Schema or Cave to create a more ambient feel to your song.