Sentence:  We attended the premieres of his concertos , symphonies , and suites ; we studied , taught , and performed his piano sonatas , chamber music , gavottes , and marches ; we bought his <WSD>records</WSD> and played them in our schools and universities . 
Meaning of the word marked with <WSD> tags:  sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove