Composer of the piano piece played in the "Tom and Jerry" short "The Cat Concerto" (5)
I believe the answer is:
liszt
(Other definitions for liszt that I've seen before include "Brahms and - is rhyming slang for drunk" , "Scorer" , "He scored" , "Pianist and composer (often associated with Brahms), d. 1886" , "Pianist, father of Cosima Wagner" .)