These are good times for coed country groups: first Sugarland, then Lady Antebellum and now Gloriana. Currently opening for Taylor Swift on tour, this hot new quartet—consisting of brothers Tom and Mike Gossin, Rachel Reinert and Cheyenne Kimball (with Tom Gossin and Reinert doing most of the lead vocals)—appears destined for glory. With pop-rock producer Matt Serletic (matchbox twenty, Rob Thomas) at the helm, Gloriana isn't pure country. The rock-edged "How Far Do You Wanna Go?" features a guitar lick that recalls the Rolling Stones' "Start Me Up," while cuts like "If You're Leavin'," the breezy, harmony-rich highlight, bring to mind a twangier version of Fleetwood Mac.