Daug7 chord for piano with keyboard diagram.
Explanation: The Daug7 is a four-note chord. Daug7 can also be written as D+7, D7+ or D7#5. Notice that Daug7 are identical with D7+5.
Theory: The Daug7 is an augmented chord extended with a minor seventh.
Notes: D - F# - A# - C