Americano, posso chiederti perché così tanti artisti finlandesi usano lo stesso formato per le copertine degli album?

Because those are greatest hits compilations.

Jonnes don’t remember Fazerin musiikkikerho

Those are hit compilations of popular 1970s – 1980s (?) artists. You will find more about it from the Finnish Wikipedia page “20 suosikkia”.

I have a nostalgic memory from my childhood of seeing those CDs sold at gas stations, all in the same special rack.

Don’t fix what’s not broken.

This is a DeepL translation from the finnish Wikipedia site, as there is no english equivalent.

> 20 Suosikkia is a compilation CD series by Warner Music Finland from its own catalogue, Musiikki-Fazer. The first 20 Suosikkia collections were released in 1995 and the last ones in the early 2000s. In addition to the songs, most of the collection includes a short history of the artist’s career on the cover. Fazer Finnlevy continued to produce independently within the company until May 1998 with releases.

> The majority of the albums in the 20 Suosikkia series consist of collections by Finnish hit and pop artists, but to some extent the series has also released rock albums. In its later stages, the series also included collections of music by various hit songwriters and composers. In addition, the series has published collections with different themes, such as rock and pop hits from different decades.