YouTube's most-watched videos of the week

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It's music week on YouTube: Lady Gaga's "Telephone" video, Germany's Eurovision contestant, and an ode to Chatroulette's Merton are all ranked in the top ten.

1) Lady Gaga - Telephone (Official Clean Version) ft. Beyoncé - The star's latest music video still dominates the viewing charts. Her next clip, to "Alejandro," has been announced to be directed by fashion photographer Steven Klein. 6,410,701 views.

http://www.youtube.com/watch?v=EVBsypHzF3U

2) Jay Park-Nothing on you (cover) - The YouTuber continues to wow viewers with his cover version of the song. 2,392,413 views.

http://www.youtube.com/watch?v=fFJgipHg6IY

3) Lady Gaga - Telephone ft. Beyoncé (Behind the Scenes) - The making-of includes commentary from characters, co-star Beyoncé, and director Jonas Åkerlund. 3,077,099 views.

http://www.youtube.com/watch?v=kQvBjs9u5Hw

4) Lena Meyer-Landrut - Satellite - Eurovision Song Contest 2010 Germany (offizielles Musikvideo) - Germany hasn't covered itself with glory when it comes to Eurovision candidates in recent years, but the country hopes Meyer-Landrut will end this streak of bad luck. 2,869,380 views.

http://www.youtube.com/watch?v=esTVVjpTzIY

5) AVATAR PONYTAIL SEX?? - Vlogger Shane Dawson is back in his best shape, telling viewers what really pisses him off. 1,684,768 views.

http://www.youtube.com/watch?v=5ItmeObbzN8

6) Chatroulette Piano Ode to Merton.m4v - An ode to Merton, a regular on webcam chat site Chatroulette, at a live concert. 1,921,377 views.

http://www.youtube.com/watch?v=LfamTmY5REw

7) Frog FAIL - The FailBlog knows: even frogs can fail. 1,670,533 views.

http://www.youtube.com/watch?v=Jfpv4f_1rLA

8) Fitness - Sexy Chick Workout - Skipping has never looked this attractive. 1,429,907 views.

http://www.youtube.com/watch?v=y2cpTnmcZpI

9) Annoying Orange Prank Call #1: Tanning Salon - Vlogger Orange calls a (real) tanning salon to get a more tangerine look. However, when reception tells him his skin might peel, he decides to give it more thought. 1,294,934 views.

http://www.youtube.com/watch?v=U_ety9JGwRI

10) Drake - Over - The next Lil Wayne? 1,243,905 views.

http://www.youtube.com/watch?v=CZCQ1fSmGbo

Most watched videos on YouTube recorded on March 25.