They are both singers
Bill DeLoach Bill DeLoach (born June 19, 1951 in Baltimore, Maryland), is a singer, keyboardist, guitarist, composer, vocal arranger, musical director, and music producer, who was a member of The Four Seasons and the musical director for entertainer Danny Gans.
Fonzi Thornton Alfonso "Fonzi" Thornton is an American singer, songwriter/producer and vocal contractor. In a career spanning 40 years, Thornton has sung backing vocals for top artists across many genres of music. His vocal credits can be found on the recordings of Aretha Franklin, Luther Vandross, Bryan Ferry, Roxy Music, CHIC, Diana Ross, Garth Brooks, Ray Charles, Mariah Carey, David Bowie, Robert Palmer, Patti Labelle, Al Jarreau, Celine Dion, Phoebe Snow and Bette Midler and many others. In 2008, Thornton joined the musical entourage of the Queen of Soul, Aretha Franklin as backing vocalist and vocal contractor and continues to accompany her in concert, on recordings and TV.