Technical quality - all tracks encoded at VBR, most of the time 196/224kb with a minimum of 32k. Original material mostly good or excellent (A few tracks I'm not sure about but could be my equipment). Many well-known performers (Brendel on piano, Menuhin on violin, London Symphony Orchestra and many others), as well as many _I_ haven't heard of. Only two or three of the 99 are soprano-type vocal, which suited me; most were instrumental, with some choral.
Some of the tracks are just one movement, but usually the full movement, sometimes to 15 or 18 minutes, though a _few_ are a rather short extract.
Title I'd disagree with. There are _many_ of the classical pieces I'd expect to find - I can't think of anything that was a glaring omission, and there were some nice surprises. But there were many I _wouldn't_ consider essentials - I'd say a third to a half were. However, having the others there is certainly no bad thing, and you can't complain at this price!
The tag information has been well filled in (with other information in the track titles) - especially composer's names: not just Tscaikovsky's forenames, but even Chopin's is _spelt_ correctly. With one exception - you can't get the date of the recordings, as both the copyright field and the actual date field have been set to 2009.
[Make sure you've got the Amazon downloader working first; downloading 99 tracks one at a time is tedious!]