Following his signing with Universal Records Japan in late 2004, he changed his name to "Myv", an apparent shortening of "Miyavi", although magazines and his website still refer to him as "Miyavi" presently.
He released his first Majors single, Rock no Gyakushuu -Super Star no Jouken- in November 2004. He followed up this single with the release of his first Majors album, Miyavizm, in June 2005. Though Miyavizm holds the intense rock sound Miyavi was known for during his early career, after the album's release Miyavi began experimenting with different types of music.
In late 2005 and for most of 2006, Miyavi adopted a softer and more romantic feel to his music as he began producing more of an acoustic/pop sound. This change was reflected in his second and third Majors albums, Myv Pops and Miyaviuta ~Dokusou~, released consecutively in August and September of 2006. He has said of Myv Pops, "It's like putting all the songs that I created, presenting my own attitude towards "popularity", into one album." [10] Miyavi shortly followed up Myv Pops with the mostly acoustic album Miyaviuta ~Dokusou~, centered on the theme of love. Miyavi's focus on the Miyaviuta ~Dokusou~ album was to present himself as a performer. He says of this goal, "[...] for the album, [Miyaviuta ~Dokuso~] I wanted to fit in with the quality of the songs themselves and absorb myself into my performance, playing acoustic guitar alone." [11]
Miyavi showcased his new acoustic stylings for the first time in his "25 Shunen Kinen Koen Tokyo Geijutsu Gekijo 5 Days -Dokuso-" concert series held at Tokyo Geijutsu Gekijo in September 2006. The concerts, centered on his 25th birthday and spanning five days total, also featured a variety of background performers who accompanied Miyavi during his songs, among them tap dancers, percussionists, human beatboxers, taiko drummers, and painters. [12]
Commenting on the change in style from his earliers albums to his current albums, Miyavi has said, "Mostly I like low threshold music, which is popular, vulgar and foolish, and I like such lyrics too. But I also like more adult music too. As an artist, the worst thing for me is to be restrained and I don’t want to bind myself at all." [11]