A what second has one whole step and one half step

An augmented second raises a not by one whole step and one half step.

A diminished second lowers a not by one whole step and one half step.

Explanation:

In music theory when a note is augmented,(+), it is raised a whole step and one half step. A diminished second lowers a note by a whole step and a half step.

the answer is counterpoint.

counterpoint definition: "the art or technique of playing a melody or melodies in conjunction with another, according to fixed rules."

counterpoint is present in a lot of baroque music- such as bach (notably his wtc prelude and fugues) and scarlatti, but can also be found in music by mozart, beethoven. it can even be found in music as modern as john williams!