In what year was the album “Хна” released by Leningrad?

In what year was the album “Хна” released by Leningrad?: The album “Хна” was released in 2011 by Leningrad, featuring 15 tracks.
What is the most successful song from the album “Хна” by Leningrad?: “Sladkiy Son” is the biggest hit from the album “Хна” by Leningrad.

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