Which soul singer's 1975 album 'A Quiet Storm' inspired a new radio format?

Which soul singer’s 1975 album “A Quiet Storm” inspired a new radio format? “Smokey Robinson.”

A Quiet Storm was Robinson’s third solo album after his celebrated years with the Miracles. Released by Motown’s Tamla label in March 1975, it presented a polished, intimate form of soul centered on romance, atmosphere, and smooth vocal phrasing. The title track became especially important to the album’s later reputation.

The phrase “quiet storm” was adopted by radio programmers for a late-night format featuring relaxed, sophisticated R&B and soul. The album did not single-handedly create every element of that format, but it strongly influenced its name and sound. It also helped revive Robinson’s solo career after two less successful albums. The album reached No. 7 on the U.S. R&B albums chart.