Question: Ruki Vverh! is a band that has which Russian musician as the lead?

Context paragraphs:
Virus (Russian band): ViRUS!  (Russian: Вирус! )  is a Russian band, formed in 1999.  Currently it is composed of Olga Laki, Yuri Stupnik (DJ Doctor) and Andrey Gudas.  ViRUS!  was popular in 1999-2001.  The project produced techno-based, Russian pop music, similar to Ruki Vverh!  at the time.  After several popular songs they disappeared from the mainstream stage of techno-based Russian pop music.

Ruki Vverh!: Ruki Vverh!  (Russian: Руки Вверх , meaning "Hands Up!")  is a Russian pop and techno band.  The band member is Sergey Zhukov.  They came to prominence in the 1990s.

Pesenka: Pesenka (in Russian: Песенка 'A song'), sometimes known as "Pesenka (La La La)", is a song by the Russian pop–dance–techno group Ruki Vverh!  (in Russian: Руки Вверх! ) .

Aleksey Potehin: Aleksey Evgenevich Potehin (Russian: Алексей Евгеньевич Потехин ; born Novokuybyshevsk, Samara Oblast, Russia) on 15 April 1972 is a Russian pop musician.  Alongside Sergey Zhukov, Potehin was a member of the successful pop/techno band Ruki Vverh!  until it dissolved in 2006.

Valeria Kozlova: Valeriya Sergeevna Kozlova (Russian: Валерия Сергеевна Козлова) (born January 22, 1988 in Moscow) better known as Lera Kozlova is a Russian musician most famous for her work with the pop-rock band Ranetki where she provided the vocals and played the drums.  After a three year stint in the band with one full album and a live album, she was forced to leave the band during the recording of the second album by the band's producer Sergey Milnichenko.

BeFour: beFour was a German pop group founded in Cologne.  The members were cast for the television show "beFour: Das Star-Tagebuch" ("The Star Diary"), which has been broadcast daily at 14:20 for three months.  The first single "Magic Melody" is a cover version of the song "Around The World" by ATC, whose have some different lyrics, and based in the song "Pesenka", originally performed by the Russian band Ruki Vverh!  in 1998.  The single "No Limit" is a remake of the same song by 2 Unlimited.

Around the World (La La La La La): "Around the World (La La La La La)" is the debut single by German Eurodance group ATC (also known as A Touch of Class).  The song is a cover of the Russian hit "Pesenka" by Ruki Vverh!  and uses the song's melody with additional English lyrics.

Mne s Toboy Horosho: "Mne s Toboy Horosho" (in Russian "Mне с Tобой Xорошо") sometimes known as Mne s Toboy Horosho (Nara Nara Na Na) is a 2003 song by the Russian pop duo Ruki Vverh!  and was released on the band's album of the same name.  In Russian the lyrics mean "I Feel Good When I'm With You" and is written by the Ruki Vverh!  duo Sergey Zhukov and Aleksey Potekhin.

Sergey Zhukov: Sergey Evgenevich Zhukov (Russian: Серге́й Евгеньевич Жуков ; born 22 May 1976) is a Russian pop musician.  He is the lead singer of Ruki Vverh! .

Sergey Letov: Sergey Fyodorovich Letov (Russian: Серге́й Фё́дорович Ле́тов , born September 24, 1956), is a Russian musician and composer, known for improvisational style, and the founder of "Pentagram" recording label.  He has collaborated with numerous jazz, avant-garde, modern classical, rock and electronic music artists including his younger brother Yegor Letov, composer Sergey Kuryokhin, and cult Soviet art punk band DK.  Also wrote music for movies and plays, collaborated with Russian, Italian and Austrian theatres, German non-profit cultural association Goethe-Institut, and Moscow Institut of Journalistics and Literature.

Supporting paragraphs: Ruki Vverh! Sergey Zhukov
Answer: Sergey Evgenevich Zhukov