[4][5] Months after the release of his debut single "Raha",[6] Lyimo was nominated on 2015's Kilimanjaro Tanzania Music Awards (KTMA) as the "New Best Artist".

[7][8] William Nicholaus Lyimo was born on 11 April 1993, at Bombo Hospital in Tanga Tanzania to Chagga parents from Kilimanjaro Region.

Later In 2017, Nass made his debut on Coke Studio Africa as a Big Breakthrough Artist, performed alongside Uganda's Sheeba and Ethiopia's Asgegenew.

Through his Instagram page, Bill Nass shared the advent of "Love Tour" with his fiancée Nandy with whom they have collaborated in various songs like "Bugana"[16] and "Do Me".

He won the best hip hop artist in 2022 at the Tanzania Music Awards [18] In 2018, Lyimo and his wife Nandy, were shortly detained by the Tanzanian authorities for sharing what was considered as indecent online content.