Your idea was ok until you posted it on the internet. Since I already had a song-lyric dictionary (that prioritized complete phrases like you used there, "HHMS

Your idea was ok until you posted it on the internet. Since I already had a song-lyric dictionary (that prioritized complete phrases like you used there, "HHMSTWYMGMYSGMYG" being FAR more likely than just "HHMSTW") it didn't take long for my program to just grab the first letter of each song lyric word, stick them together, and then add every possible combination of symbol->number to the dictionary. Now everyone you've told to do that will be very quickly cracked if I ever get their hash. This is security through obscurity and you just gave away your obscurity by posting your algorithm on the internet...