One of the most popular in a long line of traditional vocalists who emerged before the rock-dominated 1960s, Johnny Mathis has concentrated on romantic readings of jazz and pop standards for adult contemporary audiences. Though he debuted with a flurry of singles chart activity, including the Hot 100-topping "Chances Are" (1957), Mathis later made it big in the album market, where a dozen of his LPs reached gold or platinum status and over 60 made the Billboard 200. While he originally concentrated on theme-oriented albums of show tunes and traditional favorites, from the '70s...