Silli Silli songs...Hans Raj Hans & lata

Toshi asked Hans Raj Hans to sing two lines of "Silli silli aundi ae hawa"..Here is the complete song..

http://www.youtube.com/watch?v=Vc38gBo6JUA

Another "silli silli" song sung by lata for film "lekin"...

http://www.youtube.com/watch?v=62dWPzMo6oE&mode=related& amp; amp; amp;search=

Any body can explain the Rajasthan connection/background in these songs...