How much money did Def Leppard make in 2015?

In 2015, Def Leppard generated approximately $18 million in revenue, primarily from their extensive touring and the release of their self-titled album. Their successful summer tour, which included a co-headlining stint with Styx and Tesla, contributed significantly to their earnings that year. The band's enduring popularity and strong fan base helped maintain their financial success in the music industry.