Delilah Jones ~ The McGuire Sisters.
I must admit that I know nothing at all about this group. A quick trip over to Wikipedia, which to be fair isn't always the most accurate mine of information tells me that The McGuire Sisters were a trio of sisters, Christine, Dorothy and Phyllis, from Ohio who made records in the 1950's. In 2001 they were inducted into the National Broadcasting Hall of Fame in the USA.
Until recently I had never heard of them until I heard this great track.
I just love the orchestration on this record, the brass gives it such a sassy feel. Apparently this is a b-side (to a song called Picnic) and it was released in 1956. So now you know.