Which violinist worked with the American rock band "Seventh Key" who also worked at Tulsa Philharmonic?
David Ragsdale David Lasater Ragsdale, (born April 3, 1958) has been the violinist for Kansas from 1991 to 1997 and from 2006 to the present. He started violin at the age of three. After studies with classical teachers and a stint at the Tulsa Philharmonic, Ragsdale's violinist duties took him out of the largely classical area and into rock and roll.
Ann Marie Calhoun Ann Marie Calhoun (née Simpson; born May 26, 1979) is an American classically trained violinist who has performed as a bluegrass and rock musician in a number of prominent acts, including Jethro Tull, Steve Vai, Dave Matthews Band, Ringo Starr, and Mick Jagger's SuperHeavy. She is the sister of violinist Mary Simpson.