Danish metal fusion act Volbeat has grown from a well-known regional band in Scandinavia to an international touring outfit sharing the bill with music giants Megadeth and Metallica. The four-piece group mixes metal, hard rock and a touch of punk with rock and roll inspiration from icons like Elvis, creating a well-liked combination that easily sells tickets. And when the Northern European performers aren’t in the recording studio, they’re tackling headlining concerts and taking part in the international festival circuit. Volbeat’s nearly decade-long discography boasts five studio albums, all of which have achieved at least gold status in their native Denmark. The band’s 2013 effort, “Outlaw Gentlemen & Shady Ladies,” marked the first collection to chart in the U.S. That set, which former Anthrax guitarist and new Volbeat member Robert Caggiano co-produced, made it to the top of Billboard’s Hard Rock Albums chart.