Alec, I'm not familiar with this series, and I tend to stay away from compilations like these. But that's just me.
The artists are all major names in Bossa Nova. If you don't get enough info from Dusty Groove's descriptions, there are plenty of online sources of information about the artists and reviews of their work. Some basic info:
Lucio Alves -- Male vocalist; began in the pre-Bossa era; not essential, IMO.
Antonio Carlos Jobim --
Nara Leao -- Female vocalist; an important part of the early BN scene.
Carlos Lyra & Others -- Vocalist/guitarist/composer; wrote some of the early classic tunes
Sergio Mendes -- Well-known pianist/Bossa Nova & pop artist.
Roberto Menescal & Others -- Guitarist/composer/producer; wrote some of the early classic tunes; led his own combo.
Vinicius De Moraes & Others -- Diplomat, philosopher, poet, lyricist, and bad singer who collaberated with Jobim on a number of classic songs.
Os Cariocas -- Great male vocal quartet (who also played p,g,b,d); employed advanced rhythms and harmonies; participated in the legendary first public performance pairing Jobim and Joao Gilberto.
Tamba Trio -- One of the great piano trios (with vocals); read this thread.
Sylvia Telles -- Vocalist who was very popular in the early years of Bossa; career cut short by a fatal auto accident.
Walter Wanderley -- Organist; had hits in US; kind of on the kitschy side, but fun.