D7+9 (D7#9) altered chord

Altered D chord for piano presented by keyboard diagrams.
Explanation: The D7+9 alter the D9 by the change of one note. The chord name can also be written as D7#9 or D7(#9).
Theory: The D7+9 are identical with the D9 except that the major ninth is sharpenedThe tone is one half step higher.