4. These recordings are cheap, available everywhere, and very often much higher in artistic quality than today's live performances; moreover, they can be "consumed" at a time and place of the listener's choosing.

【分析】并列句。由分号连接的两个并列句。第一个分句的主干为 These recordings are cheap，available...and very often much higher in..., and 连接的三个形容词成分作并列的表语，第三个表语中又包含 much higher...than...比较结构。第二个分句的主干为 they can be "consumed"，介词短语 at choosing 作状语。

【译文】这些录像很便宜，到处都能买到，并且演奏水平比现在的现场版高很多；而且，听众可以选择在任何地方任何时候去听这些音乐。

【点拨】1）available“可用的，可得到的，可到达的”。2) live 在本句中是“现场直播的”之意。

5. Gilbert's own interest in new music has been widely noted: Alex Ross, a classical-music critic, has describes him as a man who is capable of turning the Philharmonic into "a markedly different, more vibrant organization."

【分析】复合句。主句的主干为 Gilbert's own interest...has been widely noted。冒号后面的内容是对主句的进一步解释说明，其主干为 Alex Ross...has describes him as a man...，其中 a classical-music critic 是主语 Alex Ross 的同位语，who 引导的定语从句修饰 a man。

【译文】Gilbert 对新音乐的兴趣得到大家的广泛关注：古典音乐评论家 Alex Ross 就把他描写成一个有能力把纽约交响乐团变成“一个完全不同、富有活力的组织”的人。

【点拨】1) note 在本句中用作动词，是“注意，留意”的意思。2) critic“批评家，评论家”。3) markedly“显著地”，此外还有“引人注目地”之意。4)vibrant“充满生气的，精力充沛的”，此外还有“（音乐、声音等）响亮的，洪亮的；（颜色）鲜艳的，醒目的”之意。