Going strong since 1940, this gospel and country quartet have recently been inducted into the Country Music Hall of Fame. Celebrated for songs such as "Elvira", "Bobbie Sue", and "American Made", the group continually tour and perform, even collaborating with newer artists, as they did in 2015 with a new recording of Elvira with 2013 Sing-Off winners, acapella group Home Free.

The world's first country a cappella group had a phenomenal start to their career, winning NBC's The Sing-Off in 2013. Since then they've released five studio albums, including Country Evolution, which hit the No.4 spot on the Top Country Albums chart and featured unique Home Free takes on Dolly's '9 to 5', and 'The Devil Went Down to Georgia'.

Arguably the first big star to bring Country to a mainstream audience in the 1990s, Black is one of the first artists in a generation that took inspiration from Merle Haggard, Bob Wills, and George Jones, taking rock-oriented pop and mixing it up in a country setting. Offering an easily marketable and squeaky clean image of Country, he smoothed the way for artists after him to come along, particularly Garth Brooks.

Country and bluegrass musician Ricky Skaggs is a singer as well as master of instruments including the mandolin, fiddle, guitar, mandocaster and banjo. The Kentucky-born musician started his lifelong relationship with music at the young age of five, since then he has made a name for himself as one of the best country musicians out there and has been inducted into the Musicians Hall of Fame and Museum and the Country Music Hall of Fame.

Country music singer Tracy Lawrence has been performing music since the age of 15 and now with 16 studio albums behind him, is one of the country's most recognizable artists of the genre. Tracy has sold over 13 million albums across the globe and charted on the Billboard Hot Country Songs charts more than 40 times with eight songs hitting the number one spot. This year, he embarks on a nationwide tour.

American country pop crooner Scotty McCreery got his big break when he won the 10th season of American Idol in 2011. Not one to sit on his laurels, the performer parlayed this initial boost into the certified platinum success of his debut album Clear As Day the same year. Almost a decade later, McCreery is gearing up and ready to hit the road on tour!