Sentence:  The Hephzibah Menuhin-Amadeus Quartet ( Angel ) and Victor Babin-Festival Quartet ( RCA Victor ) editions give us superlative string playing ( both in symphonic style ) crippled by unimaginative <WSD>piano</WSD> playing . 
Meaning of the word marked with <WSD> tags:  a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds