I'm asking for help from our trained musicians here.

I have a friend who has only played C recorders (soprano and tenor.) He would like to try a bass recorder, but a bass recorder is an F instrument. I have Noteworthy Composer, which should be able to produce 'fake' music for him, but I'm not sure how to do it.

We do music in C, D, F, G A and B-flat, mostly. I would like a rule which I can apply so that a musical line in one of those keys can easily be faked so that Michael can play C fingering on an F instrument.

It would help if it rhymed - you know, the kind of rule I can apply when they are all going to be in ten minutes, and meanwhile the tea kettle is starting to shriek.