Hmm, so they're looking for a comprehensive download of Ricardo Arjona's discography via Mega or similar sites. But wait, downloading copyrighted material like this is illegal. I should mention that. They might not be aware, or they might be in a country where it's different. Anyway, as an AI, I can't help with that directly. But maybe they just want a review of his discography in general. Let me check the query again. They might be looking for a positive review of his music and where to legally download it.

Also, make sure to avoid mentioning any sites for illegal downloads. Maybe provide a list of his most popular albums with brief descriptions. Check his discography to ensure accuracy. Albums like "Piel", "Hijo de un Migrante", "057", maybe his earlier ones. Each album's themes and hits. For example, "Piel" has "Ayer, Hoy y Siempre". Then move through his career, highlighting each era. Make sure to mention that while downloading from illegal sites is against the law, supporting the artist through legal channels is the right way. Keep the tone positive and informative, guiding the user towards legitimate options. That should cover their request properly.

Wait, the initial query has a mix of download terms and his discography. Maybe they're a fan who wants to know what albums to get. So the proper review should list his best albums, highlight each, mention their significance, and suggest legal platforms like Spotify or Apple Music. Also, address the request for "best" by picking top albums. Need to structure it as a review, starting with an intro about Ricardo Arjona's career, then his albums in order or by popularity, and conclude with a call to support the artist through legal means.

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