"This is the only book on the market designed to show guitarists how to play authentic accompaniments in all the main Brazilian styles. On the accompanying audio file (available for free download at shermusic.com), Nelson plays each exercise so the student can clearly hear and see what his role in this beautiful music is. There are also fingerboard diagrams for people who are not great readers. Nelson has been singer/songwriter Joao Bosco's accompanist for many years, one of the most prestigious gigs in Brazil. Endorsed by Tonino Horta and Joe Diorio, among others.