How rare are these specific 1938-1942 Piano Blues recordings?

These are described as unreleased gems, suggesting high rarity within the Piano Blues genre.

What is the primary genre and style of this collection?

The collection falls under the Blues genre, specifically featuring Piano Blues.

This compilation was released in the year 2017.

Name: Various - Blue 88s: Unreleased Piano Blues Gems 1938-1942
Brand: Various

Blues

Blues · 2017

Year · 2017Genre · BluesStyle · Piano Blues

Used

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New / Sealed

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How rare are these specific 1938-1942 Piano Blues recordings?: These are described as unreleased gems, suggesting high rarity within the Piano Blues genre.
What is the primary genre and style of this collection?: The collection falls under the Blues genre, specifically featuring Piano Blues.
When was this particular collection released?: This compilation was released in the year 2017.