Different approach to lucidity

i want to hear your opinion on this new method I’m going to try out to become lucid as soon as i get new headphones for my MP3 player. basically, I’m going to repeatedly play a sound, and train myself to know that whenever i hear that sound, I’m dreaming. what are your thoughts?

hmmm… How do you know the sound will be played in your dreams?

I was thinking it would be kind of like MILD where you remind yourself that you are going to have a dream that night, only hear there’s the possibility of reminding yourself while you are in the dream.