Motown's first Billboard Pop #1 came from a girlgroup The Marvelettes. This Please Mr Postman would become a #1 hit again in 1975 by The Carpenters. The Marvelettes soon had to give away to more popular girlbands Martha Reeves & The Vandellas and The Supremes but this song remains a classic. Actually it is one of my very favourite Motown songs! Gladys Horton was the lead singer and she left the band in 1967 to get married. The band disbanded in 1970 when Motown moved to LA without scoring another megahit.