Will Smith Raps "Summertime" on Late Show: Watch Now!

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Will Smith performed a snippet of his old school hip hop hit "Summertime" on The Late Show With David Letterman Monday night, and it was awesome.

Turning up to promote his new film After Earth, Smith strolled out to the funky song, which Paul Schaffer and the CBS Orchestra played as his intro.

That was cool enough, but then Will grabbed the mic and joined in! Watch:

Now a big-time movie star, Will's last album was 2005's Lost and Found. The A-lister does still rap the Fresh Prince theme song on occasion, at least.

Check out the original video for "Summertime" (1991) after the jump:

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