Source: Nicholas Philip, The Sermon Booklets of Friar Nicholas Philip, 1436
Type your message in the plaintext box to encipher. The letter 'h' is supposed to be enciphered as an accidental. Since it is unclear in the original manuscript whether this should be a natural sign or sharp, it appears here as an actual 'h' on the staff. Spaces are ignored. Punctuations add bar lines or a new staff.