American music group Naturally 7 will present a night of a cappella Saturday.

    Naturally 7 has a distinct a cappella style. They simulate the sounds of an instrumental band using only their voices, mouths and distortion effects. Naturally 7 was founded in 1999 by brothers Roger and Warren Thomas, who recruited five other singers the brothers had come to know over the years.

    Roger Thomas developed his singing quality after being in and out of several and traditional male groups over the years. When the group was invited to sing at a major a cappella competition in New York City, they won and moved onto the nationals before they took two more wins in the competition. Riding their new-found success and still having made no decision whether to have Naturally 7 as an a cappella group or a traditional band, Roger had the novel idea that the group would become both.

    The group appeared on “The Late Late Show” with Craig Ferguson, performing “Stardust” with Michael Buble. In November 2009, the group traveled to Bermuda to take part in Quincy Jones’ 2009 Bermuda Music Festival.

    Time: 8 p.m., May 21

    Tickets: 80-480 yuan

    Venue: Shenzhen Concert Hall, intersection of Hongli Road and Yitian Road, Futian District (福田区红荔路和益田路交汇处深圳音乐厅)

    Metro: Longhua or Longgang Line, Children’s Palace Station (少年宫站), Exit D(SD News)