Of course, the technique isn't practical for all songs. For instance, composer John Cage's “As Slow as Possible,” which is currently being performed in Germany, begins with a silence that lasts 16 months, followed by a single chord to be played on Jan. 5, 2003, then another silence, then another chord on July 5, 2004, and the final chord in 639 years.
The Science Behind the Song Stuck in Your Head [1]
Guess you won't have to worry about being earwormed by that song, but the article does go into depth as to why certain songs cause people to be earwormed. My Sharona!
[1] http://www.latimes.com/features/lifestyle/la-100701tunes.story