Creedence Clearwater Revival scored its first No. 1 album on the ‘Billboard’ 200 chart with ‘Green River’ on October 4, 1969.

On Aug. 16, 1969, Merle Haggard ’s “Workin’ Man Blues” climbed to No. 1 on Billboard ’s Hot Country Songs chart. It became the seventh of the genre cornerstone’s 38 leaders, the third ...

These one-hit wonders from 1969 should have gotten way more attention from the mainstream charts with their follow-up releases.