American indie pop-rock band X Ambassadors return to Prague after two years. Besides the biggest hits as "Renegades" or "Unsteady", we can look forward to hearing the latest track "Boom" with a catchy beat. Harris described the song’s lyrical theme of nixing toxic relationships: "I’ve had to break off a few of them recently myself... I needed to write one to give me confidence again." X Ambassadors became known after arena tour with Imagine Dragons, who gave them a helping hand at the beginning of their career.