According to Wikipedia, a Jägerbomb is a bomb mixed drink made by dropping a shot of Jägermeister into an energy drink, typically Red Bull. I don't drink, so I had no idea. But I can see how this is a party-time favourite.

Crossfaith is a Japanese metalcore / electronicore band from Osaka.

Ren is a Japanese singer-songwriter who recorded a version of Jagerbomb in English with clean vocals. It almost sounds like new country.

What an unlikely background he has! From Qobuz: Forced to give up a promising career as a motor racing driver due to injury, Ren Nagabuchi turned to music in 2014 and quickly became a popular singer-songwriter, billed as J-pop's answer to Ed Sheeran. Growing up in Tokyo, his father, Go Nagabuchi, was a popular folk rocker in the 1970s who sold over 20 million records and his mother used to work as a stuntwoman, but he was obsessed with cars from a young age and began racing karts at 12-years-old. In 2010, he lived in the UK and competed in the in All Kart Championship for the Strawberry Racing team, but whilst there, he became inspired by the music scene and stars such as Coldplay, Sheeran and Jake Bugg, and started writing with an acoustic guitar and a loop pedal.