Having different formats for your mnemonic seed is a really interesting concept. Having a your coins secured purely by a brain wallet is probably not wise. However, I do think that memorizing the seed in case of an emergency is a good idea. Some people can memorize the 12 or 24 words easily. However, other people may find emojis or pictographs easier to remember. Others may find a pattern of audio tones or colors easier to memorize.

You can start getting crazy when it comes to how you memorize your mnemonic. Literally turning your wealth into a song or poem seems fantastical until you realize that its now a very real possibility. Imagine a family that passes down its wealth by teaching every child in the next generation a certain song. The most trustworthy of them are given a secret phrase. The family song plus the secret phrase unlocks what could be millions or billions of dollars of wealth. Its like something out of a fantasy novel.