One the left you have my accoustic guitar that I use at church for the more contemporary "rock" type sound, and on the right is my "classical" guitar which I play for my own amusment and have yet to use in public, though I might break it out for a special at Christmas by playing a carol - Greensleeves anyone? Is there a more quintessential classical guitar Christmas song?
The below photos are all of me plucking around on the classical guitar. I truly love the sound of a classical guitar (think of all that great "Spanish" sounding music and you will know the sound of the classical guitar. It uses nylon strings for a softer, more mellow tone than the modern accoustic guitars which use metal strings to produce a louder sound to carry in auditoriums, etc. The classical is a much more intimate instrument, and the sound is pure, sublime, and dare I say almost holy.