Have you paid for tickets to listen to Michael Buble croon? Too bad, because the singer is apparently performing for free in NYC subways now.

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The 37-year-old Grammy award-winning singer teamed up with a cappella group Naturally 7 to peform the Jackson 5 hit, “Who’s Lovin You” much to the surprise of the subway riders. The song is also set to be featured on Bublé’s upcoming album, “To Be Loved,” which will be released early-May 2013. Take a look below: