Loudness is a Japanese heavy metal band formed in 1981 by guitarist Akira Takasaki and drummer Munetaka Higuchi. They were the first Japanese heavy metal act signed to a major label in the United States, releasing twenty-three studio albums (five in America) by the end of 2009 and reaching the Billboard Top 100 in their moment of maximum international popularity. Despite numerous changes in their roster, the band continued their activities during the 90's, finally reuniting the original line-up in 2000. On November 30, 2008 original drummer Munetaka Higuchi died from liver cancer at a hospital in Osaka at age 49. Loudness replaced him with Masayuki Suzuki and are still active to this day.

Back in the '70's, drummer Munetaka Higuchi and guitarist Akira Takasaki played together in a pop-rock band called Lazy. In an effort to pursue their musical aspiration even farther, they split from the successful group and launched Loudness in May 1981. The duo was joined by former Earthshaker vocalist Minoru Niihara, who was devoted to soul music at the time, and Takasaki's childhood friend Masayoshi Yamashita as the bassist.

The band went into the studio in August and three months later, the band's debut album, The Birthday Eve, hit the stores. It was as if the relentlessly wild arming by Takasaki in the intro of the opening track was an omen of things to come, as this album ended up making a historical impact on the Japanese rock scene.

Exceeding industry experts' expectations, a debut concert held at Asakusa International Theater attracted a sold-out show with an audience of 2,700. Watching the legendary concert which lasted more than 100 minutes, they were forced to realize that they could no longer say "hard rock is not marketable".

Their second album, Devil Soldier, was released in July 1982 and their third, The Law Of Devil's Land, followed in January 1983. Since there were no acclaimed Heavy Metal engineers in Japan at the time, an American, Daniel McClendon was tapped for these albums. Due to his contribution, the albums surpassed the quality of what was normally expected from an ordinary Japanese rock band. The style and technique had been established.

In July 1983, the band conducted their first American tour, followed by a European tour a month later. Enjoying the great response, the band felt confident on launching fully into a worldwide market.