Susan Muscarella speaks softly and carries big ambitions. Meeting up with her at the California Jazz Conservatory campus on a recent sunny afternoon in downtown Berkeley, she walked me across Addison Street to the new Fiddler Annex, which was in the final stages of construction. With office space, a student lounge, five practice rooms, and a large-ensemble studio, a library overflowing with LPs, CDs, and decades-old copies of Downbeat, and the 85-seat Rendon Hall concert space, the Annex expansion takes Muscarella one large step closer to her master plan.

“We’re making this the Juilliard of the West Coast,” she says, without a hint of braggadocio or hubris. The claim might seem grandiose, but you underestimate this woman at your peril. The CJC’s founder, president, and dean of instruction (and a formidable pianist in her own right), Muscarella has patiently shepherded the institution since she launched it 20 years ago in cramped quarters above a French cafe on Shattuck Avenue. Long known as the Jazzschool (the name still used for the CJC’s popular community music school), the nonprofit 501(c)(3) corporation took on a new identity in 2014 when it earned accreditation from the National Association of Schools of Music.