Michael Buble surprised some very lucky commuters Thursday (April 25) morning when they stepped off the 1 train at Lincoln Center (W. 66th Street), only to be welcomed with an a cappella rendition of "Who's Lovin' You," off his new album To Be Loved.

Backed by the "vocal play" group Naturally 7, who sing "Have I Told You Lately That I Love You" on Bubl�'s latest album and are gearing up to open for the singer on his upcoming U.S. tour, the Canadian crooner treated unsuspecting fans to a classy version of the Jackson 5 song. The passing 1 train even added a little ambiance to the perfectly-in-pitch number.