Which musician pioneered the electric guitar as a solo instrument in jazz?

All of the following are true statements about the Messe de Nostre Dame EXCEPT that each movement:

a) contains hocket b) contains a polyphonic setting of each Mass Ordinary movement c) is set in the isorhythmic motet style. d) employs double leading-tone cadences

What is the name of a Hungarian dulcimer?

a. cimbalom b. all of these choices c. rákóczy d. ophicleide