The Groove Line was a single written by which songwriter and record producer?
Rod Temperton Rodney Lynn "Rod" Temperton (9 October 1949 – September/October 2016) was an English songwriter, record producer and musician. He initially made his mark as the keyboardist and main songwriter for the 1970s R&B, funk and disco band Heatwave, whose hit songs included "Boogie Nights" and "Always and Forever".
Brian Potter (musician) Brian August Potter is a British-born American pop music songwriter and record producer. With his writing partner, Dennis Lambert, Potter wrote and produced hits songs for the Four Tops, Tavares, The Grass Roots, Hamilton, Joe Frank & Reynolds, Evie Sands, Coven, Hall and Oates, and Glen Campbell. Potter and Lambert were nominated for a Grammy Award for their production on "Rhinestone Cowboy".