School-learned skills I didn't think I'd still be using a quarter of a century+ later - writing out sheet music longhand...
@gwenynen Fountain pen?
@gethin76 nah, pencil and then a 0.5 pilot V Tec 
@gwenynen Wastod! Casáu sgwennu trefniadau cerddorol ar y cyfrifiadur - pensil a phapur bob amser.
@5357311 'sdim rhaglen teipio cerddorol gen i ar y cyfrifiadur eniwê