In its early years of existence, the smooth jazz format was considered to be a form of AC, although it was mainly instrumental, and related a stronger resemblance to the soft AC-styled music. For many years, artists like George Benson, Kenny G and Dave Koz had crossover hits that were played on both smooth jazz and soft AC stations.
What type of music was predominantly played on smooth jazz stations?
{'text': 'instrumental', 'answer_start': 114}