Mammina was born in St. Joseph, Michigan, and began singing in church from the age of five and performing in school musicals.
[1] After session work with The Spinners and Narada Michael Walden,[2] Mammina has gone on to record five albums, all released on her own label, Mamma Grace.
[4] Mammina is also a music educator, presenting workshops titled "Scat for Cats" and "So You Want to Be a Rock and Roll Star'" in schools and universities.
[1] Mammina combines folk music, pop, and jazz, often performing with guitarist Andre Bush.
[2][1][5] Her voice has been described as "sweet and flexible",[6] "whisper-like" with "air-brushed phrasings and silky nuance",[7] and less flatteringly, as "tiny, thinnish, high-pitched".