Faustina Charles Mfinanga (born November 9, 1992), popularly known by her stage name Nandy is a Tanzanian singer, songwriter, and actress.

At 5 years of age, she was an active member of her Sunday school choir at KKKT Lutheran church in Moshi.

After high school, she joined College of Business Education (CBE), Dar es Salaam, Tanzania.

Her career in music kicked off when a common friend introduced her to Ruge Mutahaba, CEO of Tanzania House of Talent (THT).

[14] In 2022 a series of leaked audio clips emerged in which a female voice believed to be that of Nandy, is heard instructing Mwijaku, Tanzanian socialite and radio presenter on how to compose a message that will discredit Zuchu over a past endorsement deal that she (Zuchu) declined.