Testimony is a book (ISBN 0-87910-021-4) that was published in October 1979 by the Russian musicologist Solomon Volkov. He claimed that it was the memoirs of the composer Dmitri Shostakovich. From its publication, its portrayal of the composer and his views was controversial: the Shostakovich of the book was sometimes critical of fellow composers, and most notably was strongly anti-Soviet in his views.
Testimony is a progressive rock concept album by Neal Morse. Released in 2003, this double-album is in five sections detailing the composer's life and conversion to Christianity. The album features performances from Dream Theater drummer Mike Portnoy and Kerry Livgren of Kansas, although the majority of instruments are played by Morse himself.