Third of three oral history interviews with Samuel Jay Keyser, Professor Emeritus in the Department of Linguistics and Philosophy at MIT, jazz trombonist, poet. Interviewed by Forrest Larson, MIT Lewis Music Library. Topics include: scientific and artistic creativity, historical state of linguistics, phonology, argument structure, poetry analysis, generative grammar, jazz and linguistics, music and language, poetry, free verse poetry, Theory of Evolution and the arts, linguistics at the MIT Research Laboratory of Electronics, writing poetry and short stories, dixieland jazz, Noam Chomsky, Kenneth Hale, Sylvain Bromberger, Morris Halle, Leonard Bernstein, Ray Jackendoff, Ernie Clark (trombone), Bobby MacInnis (trumpet), Dan MacInnis (banjo), Dave Whitney Orchestra, New Liberty Jazz Band, Everett Longstreth (band leader). Professor Keyser reads two of his poems, and plays two tunes on the trombone.