music: What is the significance of the date 6 july 1957?

Questions

50's Chart Toppers: Name The Artist: I Can't Tell a Waltz from a Tango?

50's Chart Toppers: Name The Artist: I Could Have Told You?

50's Chart Toppers: Name The Artist: I Cried?

50's Chart Toppers: Name The Artist: I Get So Lonely (When I Dream About You)?

50's Chart Toppers: Name The Artist: I Live Each Day?