Mentioning “Shulie a Bop”, “Lover Man”, and “Linger Awhile” as particular highlights, The Penguin Guide to Jazz Recordings says that, backed by only a rhythm section, “Vaughan is at her freest and most good-humoured.”
According to The Penguin Guide to Jazz Recordings, Vaughan is at her most expressive and joyful when performing with just a rhythm section backing her.  The guide specifically mentions "Shulie a Bop", "Lover Man", and "Linger Awhile" as examples of this.