In what year was the album “SOLO” released by eRRdeKa?

In what year was the album “SOLO” released by eRRdeKa?: The album “SOLO” was released in 2018 by eRRdeKa, featuring 15 tracks.
What is the most successful song from the album “SOLO” by eRRdeKa?: “Funkeln” is the biggest hit from the album “SOLO” by eRRdeKa.

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