Ayuda con acordes Db9 y B7b9

Alguien escribió:

9th chords are built by adding to a seventh chord a note which is an interval of a ninth from root. This implies that the 7th note from root is also included in the chord. When the 7th is omitted, the chord cannot be classified as an extended chord, as it becomes an added tone chord. 9ths may be theoretically added to any type of chord, however they are most commonly seen with Major, Dominant and Minor sevenths.

Alguien escribió:

An important characteristic of jazz is the extensive use of sevenths. The combination of 9th (2nd), 11th (4th) and 13th (6th) notes with 7ths in a chord give jazz chord voicing their distinctive sound. However the use of these notes is not exclusive to the jazz genre; in fact they are very commonly used in folk, classical and popular music generally. Without the 7th, these chords lose their jazzy feel, but can still be very complex. These chords are called added tone chords because they are basic triads with notes added. They can be described as having a more open sound than extended chords

david escribió:

Gracias a todos por responder. Cuando pongo Db9 me refiero al D con novena bemol ... Ahora me dicen que un D(b9) es un Re mayor con novena bemol y el D7 (b9) es un D dominante con la novena bemol. Así es ?

Alguien escribió:

Various kinds of chord names and symbols are used in different contexts, to represent musical chords. In most genres of popular music, including jazz, pop, and rock, a chord name and the corresponding symbol are typically composed of one or more of the following parts:

1 The root note (e.g. C).
2 The chord quality (e.g. major, maj, or M).
3 The number of an interval (e.g. seventh, or 7), or less often its full name or symbol (e.g. major seventh, maj7, or M7).
4 The altered fifth (e.g. sharp five, or ♯5).
5 An additional interval number (e.g. add 13 or add13), in added tone chords.