Megadeth is an American heavy metal band from Los Angeles, California. Guitarist Dave Mustaine and bassist David Ellefson formed the band in 1983 shortly after Mustaine's dismissal from Metallica. A pioneer of the American thrash metal scene, Megadeth is credited as one of the genre's "big four," along with Metallica, Anthrax, and Slayer, responsible for thrash metal's development and popularization. Megadeth plays in a technical style, featuring complex arrangements and fast rhythm sections.
In 1985, Combat Records gave the band $8,000 to record and produce its debut album. After spending $4,000 of the budget on drugs, alcohol, and food, the band fired the original producer and finished the recording themselves. Despite its low fidelity sound, Killing Is My Business... and Business Is Good! was relatively successful in underground metal circles on its release that summer and attracted major-label interest. Music writer Joel McIver praised its "blistering technicality" and stated that the album "raised the bar for the whole thrash metal scene, with guitarists forced to perform even more accurately and powerfully". The front cover marked the debut of band mascot Vic Rattlehead, who regularly appeared on subsequent album artwork. Killing Is My Business... and Business Is Good! features "Mechanix," a song Mustaine wrote during his time with Metallica. Though Mustaine told the band after his dismissal not to use the music he had written, Metallica recorded a different version of the song entitled "The Four Horsemen", with a slower tempo and a melodic middle section. The album also included a cover of Nancy Sinatra's "These Boots Are Made for Walkin'," at a faster tempo and with altered lyrics. Megadeth's version generated controversy during the 1990s, when its writer, Lee Hazlewood, called Mustaine's changes "vile and offensive". Under threat of legal action, the song was removed from pressings released from 1995 to 2001. In mid-1985, on a bill with Canadian speed metal band Exciter, Megadeth played its first North American tour: the Killing for a Living Tour. Poland was in the band as the tour began, but abruptly left and was replaced by touring guitarist Mike Albert. Poland rejoined Megadeth in October 1985, shortly before the group began recording its second album for Combat.

Q: Did they make an album in 1985?
A: Killing Is My Business... and Business Is Good
Did it have any hit songs?
"Mechanix," features "Mechanix," a song Mustaine wrote during his time with Metallica. Despite its low fidelity sound, Killing Is My Business... and Business Is Good! was relatively successful in underground metal circles
Despite its low fidelity sound, Killing Is My Business... and Business Is Good! was relatively successful in underground metal circles