Brittany Musumeci, 23, was a recent music graduate of the University of Wisconsin-Milwaukee.
Her elder sister, Alexis Musumeci, 24, was an Air Force staff sergeant, heading for an assignment in Korea.
Both were killed when their Toyota was hit by a jeep going the wrong way as they returned home from a day out at Disneyland.
The jeep driver was critically injured.
Britanny, seen here with Yo Yo Ma, planned to open a violin teaching studio for underprivileged children.
Her college professor Bernard Zinck said: ‘She was really a special student, very talented, not pretentious, kind, respectful and she loved to perform… She had a very attractive, natural sound.’
May the two sisters rest in peace.