In what year was the album “Eiskeller” released by ROVER?

In what year was the album “Eiskeller” released by ROVER?: The album “Eiskeller” was released in 2021 by ROVER, featuring 13 tracks.
What is the most successful song from the album “Eiskeller” by ROVER?: “TO THIS TREE” is the biggest hit from the album “Eiskeller” by ROVER.

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