Banky w signs new artiste in 2012

I think you may be referring to Banky W, the Nigerian singer and record label owner. In 2012, Banky W signed a new artiste to his record label, E.M.E (Empire Mates Entertainment).

The artiste he signed was Niyola, a Nigerian singer and songwriter. Niyola was previously a member of the girl group XL6, but she left the group to pursue a solo career. Banky W signed her to E.M.E in 2012, and she released her debut single "To Whom It May Concern" under the label.

Niyola has since released several successful singles and collaborated with other artists, including Banky W himself. She has also won several awards, including the Best New Artist award at the 2013 Nigeria Entertainment Awards.

So, to answer your question, the new artiste signed by Banky W in 2012 was Niyola.