Hello, my perception of Brazilian guitar music is a sound that is seamless and flows. It doesn't matter if it's a bossa nova or samba. The music sets an upbeat mood that make me feel relaxed and happy. That said, I'll tell you that I grew up listening to Brazilian and Mexican music living in California.
My guitar playing has gone the full circle from rock to classical. I really enjoy playing classical guitar, but would love to get into Brazilian music. BTW my Brazilian guitar heros are Luiz Bonfa and Joao Gilberto.
Lastly, I'm gratefull that you started this site and hope to learn a lot more about Brazilian guitar music and the other board members.