Bruno Mars is back with some new music ... finally! The pop star released his new single and music video for "24 Magic" -- his first solo track in four years -- on Friday. This is the first single from Mars' third studio album, "Unorthodox Jukebox," which goes on sale November 18. The music video shows Bruno letting loose in Las Vegas, surrounded by his friends and a lot of scantily clad ladies -- clearly, what happens in Vegas makes it to Mars' music videos!