Black Handkerchief of Happiness

Black Handkerchief of Happiness is a song that Brook sung to awaken his crew when he was alive. It is loud, fast paced and annoying.

Recently a CD version was released in Japan with the full song which only lasts 30 seconds 

Lyrics
Oh Black Handkerchief don't let him find you! Run Away oh black handkerchief Don't let him get you! That Octopus hide away Look theres a squid as well!

Trivia
The title of the song is a parody of the japanese film "The Yellow Handkerchief" (幸福の黄色いハンカチ, Shiawase no kiiroi hankachi-The Yellow Handkerchief of Happiness).