David Skaggs wrote:
I would say no. All the martial arts contain the same philosophical principles, they are expressed fully, partially, differently by the founders, leaders or senseis if expressed at all.
I agree...and still really like the example of music which was given. I'd say it's more a matter of different proportions than it is of different things.
Maybe we should ask what specific things are not included in other budo but which Aikido contains.