Is this a rare item in the Prog Rock collecting scene?

While it features various artists, this 2010 compilation is a specific entry into the Prog Rock genre market.

What specific rock subgenres does this album cover?

The album covers the Prog Rock and Art Rock styles, featuring 34 different artists.

This compilation was originally released in the year 2010.

Name: Various - Wondrous Stories: 34 Artists That Shaped The Prog Rock Era
Brand: Various

Rock

Rock · 2010

Year · 2010Genre · RockStyle · Prog Rock, Art Rock

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Is this a rare item in the Prog Rock collecting scene?: While it features various artists, this 2010 compilation is a specific entry into the Prog Rock genre market.
What specific rock subgenres does this album cover?: The album covers the Prog Rock and Art Rock styles, featuring 34 different artists.
When was this "Wondrous Stories" compilation originally released?: This compilation was originally released in the year 2010.