I want to know the answer to the following question:
Along with Linda Ronstadt, Elton John, Rod Stewart and Elvis Presley, what rock musician sometimes had songs featured on adult contemporary radio?
All the background I'm provided with is that "By the early 1970s, softer songs by artists like The Carpenters, Anne Murray, John Denver, Barry Manilow, and even Streisand, began to be played more often on "Top 40" radio and others were added to the mix on many AC stations.". Is that enough to answer the question?