The chord symbol for a dominant 7 flat 9 in the key of C major is C7b9.
The dominant seventh chord in C-flat major serves as the chord built on the fifth degree of the scale, providing tension and leading to the resolution back to the tonic chord.
To play a B flat dominant 7th chord on the piano, place your left hand thumb on B flat, your index finger on D, your middle finger on F, and your pinky on A flat. In your right hand, play the notes D, F, A flat, and B flat using your thumb, index finger, middle finger, and pinky respectively. Play all the notes together to create the B flat dominant 7th chord.
The dominant of Db is Ab.
The tonic of E flat major is E flat. Its dominant is B flat and its subdominant is A flat.
The difference between a 7 chord and a major 7 chord is that a 7 chord has a flat 7th note, while a major 7 chord has a natural 7th note. This difference affects the overall sound and feel of the chord.
The dominant seventh chord in C-flat major serves as the chord built on the fifth degree of the scale, providing tension and leading to the resolution back to the tonic chord.
Eb
It starts on the tonic and just has the added B flat, making it the dominant 7th chord.
You simply move the key down one half step
The dominant is the 5th, which in the key of A-flat major is E-flat. Then an E-flat major triad contains the notes E-flat, G, and B-flat.
To play a B flat dominant 7th chord on the piano, place your left hand thumb on B flat, your index finger on D, your middle finger on F, and your pinky on A flat. In your right hand, play the notes D, F, A flat, and B flat using your thumb, index finger, middle finger, and pinky respectively. Play all the notes together to create the B flat dominant 7th chord.
Assuming you are referring to a chord symbol, like G9 for example, it usually refers to a dominant 7th chord with the ninth degree of the scale added as a color tone. For example, a G9 chord contains the notes G-B-D-F-A, the first, third, fifth, flatted seventh, and ninth notes of the G scale. (The flat 7th, F natural rather than F#, is what makes it a dominant 7th chord.) You also can build a ninth chord using the diatonic 7th step of the major scale, but that kind of chord is called a major 9th rather than a 9th. In G, the major 9th chord (often notated Gmaj9), would be spelled G-B-D-F#-A.
The dominant of Db is Ab.
It depends if you're playing a D flat major or a D flat minor chord. For D flat major, play D flat, F, and A flat. For D flat minor, play D flat, E, and A flat.
D-flat, F, A-flat for the triad
E-flat Major: E-flat, G-natural, B-Flat E-flat minor: E-flat, G-flat, B-Flat
The tonic of E flat major is E flat. Its dominant is B flat and its subdominant is A flat.