The WKAZ 'IN 30' was a slang term for a Top 30 music countdown.  The list represented what was popular, or "in", with the Charleston radio audience at a given time.

This list represents selected music charts from 1957 to 1980.  The charts come from a variety of sources and illustrate the diversity and profound musical changes that occurred in AM radio programming over the 20-plus years we have documented.