Complex sentence: The new lineup recorded the album "Komadić koji nedostaje" ("The Missing Piece"), which got the name after the book by Shel Silverstein's book, and the cover of the album is the one used as the book cover.
Split into simpler sentences: The new lineup recorded the album "Komadić koji nedostaje", which got the name by the Shel Silvrestein's book. Even the cover of the album is the one used as the book cover.