This limited edition 4 CD box set, titled "Sealed Sun Zoom Spark: 1970 to 1972 Captain Beefheart 4 CD Box Set," features previously unreleased outtakes and rarities from the era of 1970s blues rock and avant-garde music. The Rhino Records (2) catalog number R2 541728 release was remastered and sealed in a cardboard box case type, with a near mint (NM or M-) condition. This set includes 4 CDs with mint (M) inlay condition, all in English language. The features of this box set are impressive, with the previously unreleased recordings and rarities being the highlight. The genre of this music is blues rock and avant-garde, and it was manufactured in the United States.