L.A. jazz vocalist Pinky Winters and pianist-arranger Richard Rodney Bennett's new CD, "Rain Sometimes" is number five this week on the amazon.com jazz sales chart. It places just behind John Coltrane's perennial best-seller "A Love Supreme" and Diana Krall's long-running "When I Look in Your Eyes." Part of the reason for this is the heavy jazz airplay being accorded the track from the album, "Melancholy Baby." A rave review by Rex Reed in last week's "New York Observer" also helped spike sales. This is Winters' sixth album in six decades. She recorded her first for the Vantage label in 1954. That LP is still available on CD in Japan. Although Winter's 1994 album on Verve-France charted in that country, this marks her first appearance on a similar jazz list in the U.S. "Rain Sometimes" is the initial release for the new L.A. - based Cellar Door Records.