Number One is the debut studio album by Nigerian rapper M Trill. It was released on 17 October 2008 by Grafton Records with distribution by Afrobest Productions. Supported by the hit single "Bounce" which gained airplay on several major radio stations, the album contains guest appearances from 2Shotz, Ruggedman, Timaya, Uchie, Korkormikor, Frank D Nero, ShoBoi and vocals from Ghanaian singer Fire. All songs on Number One were written solely by Teria Yarhere. Although the record involved a lot more rap music, it also encompassed a distinct highlife/hip hop sound.

M Trill began recording music after high school and signed his first recording contract with Xcel Music. In 2005, he released his first single "Bounce" which received significant radio airplay in Nigeria and abroad. By the time he graduated from the University of Port Harcourt, M Trill had begun to reach a mainstream audience with many big labels offering him record deals. He later signed to Grafton Records after leaving Xcel Music. M Trill has explained the reason for switching record labels:

...I have always wanted to be one of the world's best, and since my deal with Grafton included a UK release and I have always looked at the wider market. Also, I knew Grafton Records as always being true to their words. When they say something, they do it.

In early October 2008, M Trill announced Number One had been completed. He said that the album won't only appeal to rap fans but will influence the general public's perception of rap music: "Rap does not necessarily have to be noisy or hardcore, it's a kind of music that people should be able to relate with, that is why I tried as much as possible to pick my words. This is because I want listeners to understand the message I am trying to pass across." Furthermore, Tonye Ibiama, the label's head revealed in an interview that they delayed the release of the album to handle pending projects. On 17 October, 2008, Grafton Records threw a one-day star-studded "bash" in Rivers State which saw in its attendance rappers Ruggedman and 2Shotz as well as a host of other music celebrities. The event, held in Port Harcourt at the Hotel Presidential, served as the album's launch party.

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