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".
Jack Rieley John Frank Rieley III (November 24, 1942 – April 17, 2015) was an American record producer. He was the manager of the Beach Boys during the early 1970s, and is credited with guiding them back to acclaim. He would also sometimes act as a co-songwriter with the rest of the band, usually penning lyrics.