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".
Gary Nicholson (singer) Gary Nicholson is an American singer-songwriter and record producer, known mainly for his work in country music and blues. He is a two-time Grammy winning producer and was inducted into the Texas Songwriter's Hall of Fame. Nicholson has more than 500 recordings and is best known for his work with Willie Nelson, Waylon Jennings, Garth Brooks, George Strait, Ringo Starr, BB King, Fleetwood Mac and Billy Joe Shaver.