On This Day in Music History – November 26, 1966 One of Motown’s most explosive recordings made its debut on this date when “(I Know) I’m Losing You” by The Temptations entered the US R&B chart. Powered by David Ruffin’s gritty, emotional lead vocal, the song became the group’s fourth straight number one on the R&B chart and reached #8 on the Pop chart, proving once again why The Temptations were at the top of the soul world in the mid-60s. Written by Norman Whitfield, Eddie Holland, and Corneli