My trusty Psion 3c is giving up the ghost in various ways and is in any
case hopelessly dated.  I'd like to get a Palm or other kind of PDA to
replace it as a personal organiser.

One of the applications I regularly use is called 'Composer'.  It allows
you to notate a single line of music on a stave. If the note values add
up you can get the Psion to play it back to you, though I can read scores
well enough not to need this.  But I find it useful for noting down
melodies such as new Anglican chants (please don't laugh).  A musical
equivalent of the Notepad.

So, my question: are there applications around for PDAs which do this?
It would help me to choose between the various models available, or at
least ensure that when I do take the plunge I can get the new gadget to
do all that the old one did.

Virginia Knight
Personal homepage: http://www.ilrt.bris.ac.uk/~ggvhk/virginia.html
Blog (mostly about singing): http://edward.ilrt.bris.ac.uk/~cmvhk/blog/