Mel Bay's Modern Guitar Method Grade 7 - Technique SolosAdvanced level. The 11 solos contained in this book were written by William Bay to explore some of the diverse moods and colors which can be expressed on the guitar. The collection is eclectic and contains solos ranging from swing to moody ballads to contemporary acoustic settings. Some of the solos are in dropped D tuning. All present an interesting palette of musical expression and are scored in notation and tablature.