"This is the talent of a lifetime." Iris DeMent, singer/songwriter

"an important new talent . . . a new star"  Bill Brownlee, Patchchord.com

"He is a national treasure." Kathryn Smith, Kate Smith Promotions of Chicago

“A powerful voice, an extraordinary voice, a beautiful voice.” - Frederica von Stade, internationally renowned mezzo-soprano

“It is a beautiful, dark voice (una voce bella, scura). Gregory has no vocal problems.” - Gino Bechi, preeminent Italian baritone of the twentieth century.

“The first thing that impressed me about Gregory was the way he could project his voice into the space without a microphone. He is a stylistically versatile singer. I’m impressed with his sound and his feel for the music.” - Tommy Ruskin, drummer.

“He reminds me of Big Joe Turner. His voice has the strength of a semi truck.” - Russ long, pianist.

"Gregory Hickman-Williams has a great vocal instrument. Powerful, soulful and always musical in a variety of styles." - Danny Embrey, Guitarist

"No one sings with as much intensity. He has a wonderful voice and the musicianship to go with it." - Laurette Goldberg, Founder of Philarmonia Baroque Orchestra

"Gregs vocal stylings are beautifully crafted and artistically inspired." - Stan Kessler, Trumpet

"I was most impressed with Gregory's big voice and his control of it. Everything he did was very musical. I liked the way he gave familiar songs a new sound. His command of languages was very impressive, singing in perfect, idiomatic Portuguese -- very rare!" Doug Auwarter, percussionist

"Gregory Hickman-Williams is the champion of singing.  His voice will heal people."  Loren Pickford, EarthSpirit recording artist

"His voice is a miracle."  Lester "Duck" Warner, singer