Ashford & Simpson were an American husband-and-wife songwriting-production team and recording artists. Comprising of Nickolas Ashford and Valerie Simpson, the duo's distinct R&B and soul sound significantly contributed to the Motown era, writing smash hits for artists such as Marvin Gaye and Diana Ross. Their own performance career peaked in the 1980s with the chart-topping single "Solid". Known for their powerful harmonies and emotive lyrics, Ashford & Simpson's musical influence is evident in the landscape of soul and R&B music.