他写过数百首优美的乐曲，1990年3月完成最后一部作品的翻译：He has written hundreds of beautiful piece of music, in March 1990 to complete the final as a secret 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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He has written hundreds of beautiful piece of music, in March 1990 to complete the final as a secret

He has written several hundred exquisite musics, in March, 1990 completed the last work

He wrote several 100 beautiful music, and completed in March 1990, the last piece

He has written hundreds of beautiful piece of music, in March 1990 to complete the final as a secret