Alliteration

Definition: The same sound at the beginning of two or more close words.

Example:
Dewdrops Dancing Down Daisies-By Paul Mc Cann-

Don't delay dawns disarming display .
Dusk demands daylight .
Dewdrops dwell delicately
drawing dazzling delight .
Dewdrops dilute daisies domain.
Distinguished debutantes . Diamonds defray delivered
daylights distilled daisy dance .

Explanation: This catches the attention of the readers when it's read aloud when the author use alliteration to play with words.