Magic Johnson will be honored in Las Vegas next week, but it wouldn't be like him to not give something back ... so he's putting on a concert.
The Lakers legend is set to receive a key to the city from Mayor Carolyn Goodman at a ceremony on October 9, but he's turning it into a 2-day event for the community.
We're told the "Magic Johnson Showtime Pop-Up Concert" at Mandalay Bay Beach will kick things off Tuesday, with performances by several big acts ... including Snoop Dogg. Our sources say Will Smith also recorded a congrats video that will air during the show.