These digitally remastered singles are all in crisp mono, as they were originally mixed for radio. Many of them (such as the Supremes' "You Can't Hurry Love" and the Temptations' "Cloud Nine" are dramatically different from the versions heard on "oldies" radio today. The singles are sequenced for the most part in release date order. Most of the major hits from the 1959 - 1963 period are included on the set: Barrett Strong's "Money," the Miracles' "Shop Around", the Marvelettes' "Please Mr. Postman, and the Contours' "Do You Love Me", for instance. In 1964, Motown became a true hit factory (the Supremes, Temptations, and Four Tops all had their first major hits that year) and it is here that the omissions on the set start to become more pronounced. There is just too much great music from 1964 through 1971 from Motown to fit onto only four discs (actually three, since the first disc is dedicated to the 1959 - 1963 period.