As you can see, the accompanying piece has a sequence of notes on
g-natural (an accidental) followed in the next bar by a notes on
g-sharp (called for in the key signature). When I was young, I was
taught that the effect of an accidental ends at the measure bar so it
was not necessary to explicitly cancel it.
But I seem to recall some discussion that suggested it was preferable
to explicitly cancel accidentals in a situation like this.
What do the other people on this list think? Should I insert an
explicit sharp at the start of bars 3, 7, 11, and 15? Leave it the
way it is? Switch to relative accidentals and let MusiXTeX decide for
me?