在过去的一百年间，音乐的录制经历了圆筒式录音、78转虫胶唱片、密纹唱片、磁带到现在的CD和数字下载。
In 100 years, recorded music has gone from cylinders to shellac 78s to vinyl LPs to cassettes, CDs and now digital downloads.
早在1948年的6月，哥伦比亚唱片公司就成功引进了第一张可供留声机长时间播放的密纹唱片。
Columbia Records introduced the first successful microgroove long-playing phonographs way back in June 1948.
起先是密纹唱片和唱机的重新流行，如今盒式磁带也回到了我们的生活。
First LPs and record players made a comeback - now the cassette tape is rewinding back into our lives.
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