“By far the meatiest and most complex opus was by the highly inventive Englishman Thomas Adès via his 19-minute violin concerto entitled Concentric Paths… full of explosive and dissonant music-making….She (Hwang Williams) had the virtuosity to play through all the musical brambles, emerging unscathed”.
San Jose Mercury News (Cabrillo Festival, 2007)

“…unerring musical intelligence and technical mastery..”
Marin Alsop

"....she dealt effortlessly with her countryman's hugely demanding score.."
Kultur, Basel ( Isang Yun concerto), 2006 

"The violin part (Christopher Rouse Violin Concerto) is especially challenging, with more double stops than a Paganini variation. Hwang-Williams' formidable technique made them fleet and sweet, bringing forth a frenzy of appreciation at the conclusion."

San Francisco Classical Voice

Santa Rosa Symphony and Jeffrey Kahane, 2005

"Disciplined virtuosity, flawless intonation and big, powerful tone."

The Press Democrat, Santa Rosa, 2005

"Yumi Hwang-Williams brilliantly elucidated Daugherty's virtuosic violin concerto, Fire and Rain, ringing tone in the demanding high-velocity sections and meltingly tender in the slower ones."

Santa Cruz Sentinel, Cabrillo Festival, 2003

"The performance (Kernis, Lament and Prayer) was notable for the outstanding interpretation of the solo violin part by Yumi Hwang-Williams."

Indianapolis Star, 2003

"Peter Oundjian led a 22 piece Baroque version of the CSO ( Colorado Symphony Orchestra) in Vivaldi's Seasons. Hwang-Williams looked lovely and played with exuberance throughout these superfamiliar works, There was sweetness and understated simplicity in the slow movements, fire and passion in the fast ones, and generally solid tone and technique, regardless of the season."

Rocky Mountain News, 2003

"In the Bach Solo Violin Sonata No 1, she went beyond merely virtuosic playing to offer something more profound, communicating its rare depth and emotional power, earning enthusiastic cries at the end. She seemed undaunted by her heavy-duty program, even delivering Ravel's famously tricky , gypsy-flavored show piece, Tzigane, with seemingly bemused ease."

Denver Post, 2002