When meeting a stranger, it’s always useful to have someone you trust vouch for them. Djavan is a Brazilian music superstar you may not know of. He’s been huge there for decades, and right now he’s touring the US for the first time in 13 years. If you want an endorsement for Djavan, turn to none other than Stevie Wonder. Their 1982 collaboration called “Samurai” features vocals from Djavan, with Stevie on harmonica.