The singer is encouraging people to take photos of themselves dressed like a character from Star Wars.
The legendary rock musician died Monday evening.
Watch John Mayer play an acoustic cover of Drake's "Passionfruit" in Amsterdam.
Watch Dave Chappelle and John Mayer pay tribute to Charlie Murphy at a show in Ohio.
John Mayer says that Frank Ocean's new music founds like "space reggae."
Watch Dave Chappelle And John Mayer Cover Classic Nirvana Together
In this piece from our June 2005 Photo Issue, David Banner, John Legend, Damon Albarn, and more share the impact Davis's music had on them.