you have found the sensei's taster puzzle for his new series of song lyric puzzles - musigami. the taster is intended to give you an idea of the kind of puzzles you will encounter should you take on his easier diversion from the 'proper' series' of puzzles.
if you can answer this sample question, you should go on and register (for free!) and play the musigami challenge. the same login will also allow you to play the two full series' of more challenging puzzles. (or just go register anyway)
the image below contains the lyrics of a well known song. the sensei has formatted them in a 'tag-cloud' manner, ie. the more often a word occurs, the bigger it will appear in the cloud.
the tricky part is that the sensei has removed all occurrences of the words that appear in the title of the song.
all you need to do is enter the title of the song.
image courtesy of www.wordle.net