I've been wondering where the "Lyrical" part of Magical Girl Lyrical Nanoha comes from. To the best of my knowledge, none of the Magic the characters use seem to be remotely music based, and even when the writers tried to step away from the "Magical Girl" aspect, they still kept the Lyrical part in Magical Record Lyrical Nanoha Force.
Is there some meaning to the word Lyrical that I've missed?