Tip! In 2010, Sublime Frequencies released Saigon Rock and Soul, a compilation of wartime rock ‘n’ roll tracks from Vietnamese groups with distinctly American influences. Included among them was “Đêm Huyền Diệu (Magical Night)”, a slinky, horn-packed song attributed to a young singer known as Phương Tâm, though it later turned out to be artist Connie Kim’s rendition.Magical Nights: Saigon Surf Twist & Soul makes up for this error and then some, putting Tâm’s powerful voice and entire prolific ca…