"The album's called Songs After Dark and it's by Judy Bridgewater"

 Judy Bridgewater is a fictitious singer, but she fits into an easily recognisable style of easy listening music from the 1950s, the era just before rock and roll became the dominant popular form.  Lounge music was particularly popular in the 1950s and 1960s, and continues to have many fans.  Peggy Lee and Doris Day are possible models for Judy Bridgewater.