Shawn Kemp spent his last night before beginning home detention enjoying the sights and sounds of a Lil Wayne concert.

TMZ Sports has learned the former NBA superstar -- who was just ordered to 30 days of electronic home monitoring for firing a gun during a 2023 parking lot dispute -- hit Climate Pledge Arena in Seattle on Wednesday to get down at "The Carter VI" tour.

He didn't seem like a guy too concerned about the sentence he was getting set to serve -- as video we obtained showed him vibing to Weezy's tunes.

Check it out, the former Seattle SuperSonics hooper danced as Wayne did his thing on stage ... and ex-hooper even got a bit cozy with a pal nearby.

Unfortunately for the 55-year-old, Kemp's next few weeks won't be as thrilling ... as he formally enrolled in an electro

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