For some, it's an ancient and honored tradition. For others, it
may be a lark that ends with choruses of "we should do it again
next year."  Sure, Christmas caroling puts smiles on the faces
of those being serenaded, but for those singing the joyful
tunes, it can be a time of peace and joy as well.  Keith Cerny,
CEO of Sheet Music Plus, offers these tips for happy caroling
this holiday season:  Dress to impress. Ensure you are bundled
up for the chilly winter air, or if indoors, have plenty of
Santa hats on hand with reindeer antlers and Rudolph noses for
the kids. Sturdy comfortable shoes are also important.  Light
your way. Since Santa is the only one with a red-nosed reindeer
to cut through the dark, bringing flashlights or clip-on reading
lights to read the sheet music and navigate sidewalks and stairs
is essential. Younger children can wrap a glow-in-the dark tube
stick around their wrists so you can easily find them and they
can be seen by any oncoming cars. Bring extras as kids love to
wear them.  Know