The sums are the core musicians that participate in this music project lead by the founder, composer and bandleader Steve Anthony B (Steve Belvilus). The core Voices includes: Francesco Beccaro, Joel Desroches, Oliver Rambeloson, Patryce Williams, Andrew Gould and Gil "XL" Defay. The Voices behind S U M have played with some of the most prestigious artists in United States: Wallace Roney, Les Nubians, Cece Winans, Ariana Grande, The Village Vanguard Orchestra, George Clinton of the Funk Parliament, Natalie Cole, Jimmy Cobb, Tye Tribbett, Eric Benet, Ms Lauryn Hill, Benny Golson, Rhonda Ross, Tama Braxton, Renee Neuville, Roy Hargrove, Hezekiah Walker and many others.

SUM promotes self acceptance and uniqueness through its music and has performed on some of the greatest stage of New York City: The Brooklyn Bowl, The B.B. King Blues Club, Club Bonafide, Rockwood Music Hall, The Groove Club...