The chord I shared comes first in the composition. The mode is in B♭ Locrian with a flat 2nd, though B♭ minor works here as well. Certain instruments have certain chords or notes. The choir is a B♭aug(sus2). I have three instruments in the bass section. The first is B♭, the second is E♭, and the third, being an octave above the first, is also B♭. The choir then goes to an A♭7 chord. However, because of the basses, it ends up being E♭ minor thirteenth inverted on G♭ (E♭m13\G♭). On the piano, I suppose this could just be condensed into something with just four notes. But I see what you mean about this being analyzed as a C half diminished chord. The context for this is that I'm composing an unofficial Metroid soundtrack, so I'm trying to apply the kinds of chords used from older Metroid music as a way to achieve the sound without relying on synths alone. Your reply has been helpful, though, and I'm glad you were able to help me understand this better.