Isus roman degree
The suspended tonic — the 3rd is replaced by the 4th, leaving home undefined as major or minor. A suspended shimmer that begs to fall to the 3rd and settle on I.
Where it lives
0semitones from the tonic
Major mode
suspended
Hear it in context: I-Isus-IV-V
Piano sound loads on first tap. Resolved in the key of C — every chord links to its full analysis.