The 'Kolavari' song is not good. If that song is to be termed 'nice', then the meaning of the adjective is similar to a situation where a year and a half kid mixes a piece of chalk with the froth of milk with a spoon in a bowl, then puts the same spoon into her mouth and pronounces it as 'nice'.
And we have various versions of the song, the number of which increases as days pass by. I don't understand that 'magic' in the song which has attracted millions of people around the globe. Whatta song!!