On this day in music history: August 9, 1969 – “Hot Fun In The Summertime” by Sly & The Family Stone is released. Written and produced by Sly Stone, it is the San Francisco, CA based band’s seventh single release (on Epic Records). The single is issued just one week before the bands’ legendary performance at Woodstock. The stand alone single is initially mixed and released in mono only. When it is included on the bands greatest hits compilation in October of 1970, a fake re-channeled stereo mix of the song is prepared from the mono single master, rather than remixing it from the 16-track multi-track tape. In 1973 when CBS Records releases a quadraphonic stereo version “Sly & The Family Stone’s Greatest Hits”, the song is remixed in 4-channel stereo. This remains the only real stereo mix available until the early 90’s when it is finally receives a standard two-channel stereo mix. The new stereo remix makes its first appearance on the compilation CD “Rock Artifacts V. 1” in 1991. It later appears on “The Essential Sly & The Family Stone” in 2003 and the remastered CD reissue of “Sly & The Family Stone Greatest Hits” in 2003. “Hot Fun In The Summertime” peaks at #2 on the Billboard Hot 100, and #3 on the R&B singles chart on October 18, 1969.