My browser (Chrome) has a big "Translate?" button that does a good job. You should consider a bi-lingual message sooner rather than later if you want to draw in a larger audience. Use keywords in English and Portuguese so Google finds it. And create some category tags and link each blog to them so they don't show up as "uncategorized." Anything like this will bring more eyes to the blog.

There is a broken link on the August 20 entry.

It looks good and it's a nice idea. In the translation I see the title translates as "Harmonicas Out."   

SRS