Raavan has three songs with words which repeating words...
Kata Kata sung by Ila Arun, Sapna Awasthi and Kunal Ganjawala... This song has a lot of words which are sung in repetition! Gaya Gaya, Mara Mara, Dulhe Miyaan Dulhe Miyaan and so on!
Ranjha Ranjha sung by Rekha Bhardwaj, Javed Ali and Anuradha Sriram... I love the feel of this song!
Beera Beera sung by Vijay Prakash, Mustafa Kutoane, and Keerthi Sagathia... It sounds really nice the way Beera Beera sequence sounds... and some of the lyrics also catch attention! Somehow it reminds me of the title track of Omkara, Dham Dham Dhadam Dhadaiyya re!
All these songs shout out loud of the typical AR Rahman flavor of music! Crisp highs, and deep lows! In my personal opinion, ordinary music systems do not do justice to his music!
Now why are the words being repeated?
My take... this is Raavan's soundtrack! and has to justify the fact that Raavan had 10 heads! all of them singing would mean the same word is to be repeated! As a matter of fact, Beera is repeated 10 times when the song starts :)
Alright I am just kidding about the repetition of Beera 10 times, but thanks if you tried to sing the song in your head and count the number of times it was repeated!
I have been a Raavan fan for a while now, and have some thoughts about how his presence in the modern day could be beneficial to us! (this is assuming he carries all his 10 heads together)
Now some people could argue that 10 heads were symbolic and share their accurate knowledge about Raavan or Raavana, but hey! We are not in a "know more about Raavan" lecture are we?