Killing Is My Business... and Business Is Good!

Killing Is My Business... and Business Is Good! is the debut studio album by American thrash metal band Megadeth, released in the UK on May 17, 1985, by Music for Nations and in the US on June 12, 1985, by Combat Records.

Killing Is My Business... and Business Is Good! received mostly positive reviews, not just from metal-oriented magazines, but from the mainstream press too. Colin Larkin, writing in the Encyclopedia of Popular Music, called the album a "ferocious blast of high-energy thrash metal", weakened by a thin production. Similarly, Steve Huey from AllMusic observed that the album is "as raw as Megadeth gets". However, Huey noted that the riffs and compositions weren't completely developed, and called Mustaine's vocals "amateurish at best".