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 alter-ego of super-sized baritone and Kingsized band leader Mike Geier, Puddles has been a mainstay of the Atlanta entertainment scene since 1998. The six-foot-eight inches entertainer has come to international fame with his heartfelt renditions of famous songs and distinctive whiteface clown costume. An enigmatic figure, he is known for not taking interviews in character, but has performed at various festivals in both the USA (Adult Swim's Aqua Teen Hunger Force's tour in 2010) and at countless worldwide comedy festivals, including the renowned Edinburgh Fringe Festival.

An Australian rock band hailing from Melbourne, who took their name from a road sign for the Victorian township of Little River, Little River Band has found success in both Australia and the USA and have since gone on to be hugely popular throughout the world. Enjoy an unmissable evening with the group as they bring the live show to you this year!

Hitting the road in North America this year is Leonid and Friends, the YouTube sensation tribute band to Chicago, Earth Wind & Fire and others, from Eastern Europe! Despite never having seen Chicago live (they never toured to band leader Leonid Vorobyev's home country of Russia), the group became a global hit for their stunning recreation of the music of the legendary American soft-rockers.