[["Nitty Gritty Dirt Band","artist"],["Matthews' Southern Comfort","artist"],["Richie Havens","artist"],["John Denver","artist"],["Carole King","artist"],["Carly Simon","artist"],["Marvin Gaye","artist"],["Melanie with The Edwin Hawkins Singers","artist"],["John Lennon and the Plastic Ono Band","artist"],["Jonathan Edwards","artist"]]