While I've got you pumped out of your minds about odd meter Brazilian styles, here's a page of Samba and Bossa Nova in 5/4:
Learn all combinations of the above parts, then improvise variations on the left hand parts. Re-read the notes for the page of Bossa/Samba in 7, and visit my post explaining why the concept of odd meter Brazilian music is not as screwed up as you might think. And do purchase my book Playing Samba and Bossa Nova for a general practical summary of these styles in their usual meters— either in print or as an e-book.
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Here's something from the '60s by Roberto Menescal. I have noticed that the bands tend to rush on these older odd meter recordings.