Is it a samba? Probably. It also depends on how broadly you define a samba. Percussion comes in heavy later in the piece with a pile of street drummers for a thicker feel. I’m having a hard time describing the exact groove of this piece. “Slightly whiter than average samba”?
Lord of Shadows
Here’s an exotic-sounding high-energy piece piece from the Sleep Facing West blog. See that site for attribution details. This is also free to use!