Compare explicit altered dominant chords on piano. Read changed degrees, hear written-note voicings, check omissions and practise a selected example.
Choose a root and chord type, then hear written-note examples and practise the selected layout. This page lists 96 named references across 8 types and twelve roots; it is not every possible chord name or voicing.
96 named references
The 96 entries below cover this declared collection across twelve roots. They are not a claim to exhaust every possible altered harmony.
Filters change this view only. All names stay on the page.
Current reference · altered
Actual notes: C3 · E3 · B♭3 · D♭4
Omitted here: 5
This collection covers named dominant-seventh alterations: flat or sharp ninth, flat or sharp fifth, sharp eleventh, flat thirteenth and two specific combined examples. “Alt” is not resolved to a single compulsory note set.
A flat or sharp in the suffix changes the named degree relative to the chord root. The resulting note is not necessarily written with the same accidental. Read the formula and written note list together.
For the C7(♯9) example, the altered ninth is written D♯ while the major third remains E. D♯ and E♭ use the same piano key in this reference tuning, but the written intervals carry different roles.
A reduced example may omit an unaltered fifth. It does not omit a specifically named flat fifth or sharp fifth and still claim to demonstrate that alteration. The validator checks the actual notes against the selected subtype.
A sharp-eleventh voicing with the fifth omitted can sound like an enharmonically related flat-fifth chord. The finder may return more than one explanation; neither the keyboard nor a single chord symbol establishes the entire musical context.
Compare the ordinary dominant-seventh structure with the selected alteration. Use formula-tone and example-layout tasks separately, and keep the omissions visible in both the screen and printout.