Difference between V7 and Vmaj7 chords?

The main thing to understand is the V7 has a minor seventh interval and the VM7 has a major seventh interval.

1. What does V7 mean in chords?
2. What is the difference between a 7 chord and a major 7 chord?
3. What is a 7th and 9th chord?

What does V7 mean in chords?

A dominant seventh chord adds an additional scale degree—the flat seventh (also called a dominant seventh). Because they're based on the fifth degree of a scale, dominant chords are indicated with the Roman numeral “V” or, in the case of a dominant seventh, with “V7.”

What is the difference between a 7 chord and a major 7 chord?

A dominant 7th is not the same as a major 7th chord. ... A major 7th chord is formed by playing the root (1st) + 3rd + 5th + 7th notes of a major scale. A dominant 7th is formed by simply lowering the 7th note a half step. As an example, Cmaj7 = C - E - G - B (7th note).

What is a 7th and 9th chord?

In music, the dominant 7♯9 chord ("dominant seven sharp nine" or "dominant seven sharp ninth") is a chord built by combining a dominant seventh, which includes a major third above the root, with an augmented second, which is the same pitch, albeit given a different note name, as the minor third degree above the root.