Moskau is the seventh track of Reise, Reise. Rumored to have originally been intended as a duet with Julia Volkova of Russian pop duo t.A.T.u., it instead features the vocals of Viktoria Fersh, whose voice bears a strong resemblance to Volkova's. The song refers to the Russian capital of Moscow and features two perspectives on the city: its beauty and culture, and the undercurrents of corruption and prostitution.